The jury found Thomas guilty on both counts. The court imposed sentences, and Thomas perfected an appeal. We moved the appeal to our docket.3
III. ASSIGNMENTS OF ERROR
Thomas assigns that the district court erred in admitting the evidence of the *721Wolfgirl conversation under rule 404(2) and that the evidence presented at trial was insufficient to support a conviction on count 1.
IV. STANDARD OF REVIEW
It is within the discretion of the trial court to determine relevancy and admissibility of evidence of other wrongs or acts under rule 404(2), and the trial court's decision will not be reversed absent an abuse of discretion.4
In reviewing a criminal conviction for a sufficiency of the evidence claim, whether the evidence is direct, circumstantial, or a combination thereof, the standard is the same: An appellate court does not resolve conflicts in the evidence, **972pass on the credibility of the witnesses, or reweigh the evidence; such matters are for the finder of fact. The relevant question for an appellate court is whether, after viewing the evidence in the light most favorable to the prosecution, any rational trier of fact could have found the essential elements of the crime beyond a reasonable doubt.5
V. ANALYSIS
1. RULE 404 EVIDENCE
Thomas argues that the admission of the Wolfgirl conversation did not inform any element of count 1 and was not within the relevant limited uses under rule 404(2). Further, he contends that the irrelevant sexually explicit language and images in the conversation prejudiced the jury.
Rule 404(2) prohibits the admission of other bad acts evidence for the purpose of demonstrating a person's propensity to act in a certain manner. But evidence of other crimes which is relevant for any purpose other than to show the actor's propensity is admissible under rule 404(2).6 Thus, it may be admissible for such purposes as proof of motive, opportunity, intent, preparation, plan, knowledge, identity, or absence of mistake or accident.7
We must consider whether the evidence of prior bad acts was admissible for a proper purpose other than propensity to commit the crimes charged. An appellate court's analysis under rule 404(2) considers whether the (1) evidence was relevant for some purpose other than to prove the character of a person to show that he or she acted in conformity therewith, (2) probative value is substantially outweighed by its potential for unfair prejudice, and (3) trial court, if requested, instructed the jury to consider the evidence only for the limited purpose for which it was **973admitted.8 Evidence that is offered for a proper purpose is often referred to as having "special" or "independent" relevance, which means that its relevance does not depend upon its tendency to show propensity.9 The admissibility of other crimes evidence under rule 404(2) must be determined upon the facts of each case and is within the discretion of the trial court.10
(a) Motive
We must consider whether the evidence of prior bad acts was relevant to *722show motive other than Thomas' propensity to commit the crimes charged. Motive is defined as that which leads or tempts the mind to indulge in a criminal act.11 Motive, even when not an element of the charged crime, is nevertheless relevant to the State's proof of the intent element of the crime.12 Motive qualifies as a legitimate noncharacter theory because although character carries a connotation of an enduring general propensity, a motive is a situationally specific emotion.13 Several Nebraska cases inform our analysis of rule 404(2) evidence admitted to show motive.
In State v. Sanchez ,14 the trial court admitted rule 404(2) evidence of when the defendant had sexually assaulted his children aged 13 and 5 and of when at 22 years old he sexually assaulted a 14-year-old girl and impregnated her. The State argued that the other crimes evidence proved motive to obtain sexual gratification from underage women, because many adults find it hard to believe that an adult is sexually attracted to a child. We reasoned that the argument only illustrated that **974under the guise of motive, the State was attempting to prove propensity. We held that although the State's conclusion was logically relevant, it did not articulate a legitimate fact of consequence to the determination of guilt. Therefore, the crimes did not have independent relevance and were inadmissible as to motive.
Importantly, intent was not an element of the crime charged in Sanchez . Because intent was not an element of the crime charged, we stated intent was not a fact that was of consequence. Then, in discussing motive, we noted our holding in an earlier case that even if proof of motive is not an element of a crime, any motive for a crime is relevant to the State's proof of the intent element. Because here, intent is an element under § 28-833(1), Sanchez leaves open the possibility that motive could have independent relevance because it would be relevant to proof of intent.
In State v. Trotter ,15 the court admitted evidence of the defendant's prior abuse of his ex-wives to show a similar motive that the defendant used his superior size and strength to control the behavior of another. We reasoned that the State improperly attempted to show that because the defendant may have been motivated to control his ex-wives through his superior strength, he was likely to use that strength to control someone else. In determining that the evidence was inadmissible to show motive, we reasoned that the focus on the defendant's actions rather than his motive was impermissible propensity evidence. In Trotter , we contrasted the situation with that in State v. Phelps .16 In Phelps , a defendant was charged with kidnapping a 9-year-old girl who was never found. We determined that evidence of six prior acts of sexual contact by the defendant with young girls showed motive-a sexual motive-which tended to show that the defendant's motive for kidnapping was to achieve sexual gratification.
**975In State v. Payne-McCoy ,17 we stated that intent was not at issue in the case. We reasoned that prior drug sales to the victim *723did not explain the defendant's motive to sell drugs on the day of the crime, except to show that the defendant sold drugs to the victim before and would do it again. We noted that this type of logic is exactly what is prohibited by rule 404(2). We determined that the rule 404 evidence of prior drug deals was inadmissible to prove motive.
In Torres ,18 the district court admitted evidence of a prior kidnapping that showed the defendant's motive was to restrain, rob, and kill the victim to obtain money and transportation to Texas. We stated that intent was not at issue. Turning to motive, we observed that a person's prior actions can help to show motive because of the light they shed on that person's state of mind. We explained that there is a fine line between prior bad acts evidence that goes to propensity and evidence of the actor's motive to commit a later crime. We explained that evidence is not barred just because its relevance could be characterized as propensity: "[S]o long as the evidence is also relevant for reasons not based on the defendant's character, it is admissible under rule 404(2)."19 We clarified that " 'propensity' is meant to refer simply to criminal propensity, i.e., character,"20 and not to "a specific propensity to do a particular thing."21 With regard to motive evidence, we reasoned:
It can easily be framed as relevant because it shows a defendant's "propensity" to commit crimes for a particular reason, i.e., motive. Someone who has a motive to commit a crime could also be described as having a "propensity" to commit the crime. But where the defendant's **976motive is particular-in other words, is not based in the defendant's character-evidence of prior acts is nonetheless admissible to show the defendant's motive to commit the charged crime because an inference of a criminal propensity is not required to establish independent relevance.22
There, we agreed with the district court that the prior kidnapping was independently relevant to show the defendant's motive, to obtain money and transportation to Texas.
We are also persuaded by cases from the Seventh Circuit. In U.S. v. Zahursky ,23 the defendant challenged admission of prior chats with others, claiming that they "gave unnecessary, shocking, repulsive and sexually explicit details." The Seventh Circuit quoted an earlier case stating that " '[p]rior instances of sexual misconduct with a child victim may establish a defendant's sexual interest in children and thereby serve as evidence of the defendant's motive to commit a charged offense involving the sexual exploitation of children.' "24 It reasoned that in earlier chats with different individuals, the defendant admitted to having sex with a 14-year-old or having a sexual interest in 14-year-old girls. The court stated that the defendant's "admission to having had sex with a fourteen-year-old and the sexually explicit nature of the [earlier] chats make them probative as to his intent and motive in chatting with [the victim in the instant *724case] and then meeting her ...."25
In U.S. v. Chambers ,26 the defendant objected to admission of his chat with a special agent posing as a minor, arguing that it merely demonstrated his propensity to entice minors. But the Seventh Circuit determined that the chat was admissible to show motive and intent.
**977Here, the court admitted the Wolfgirl conversation for the purpose of showing motive to commit the charged offense. As noted above, motive is relevant to the State's proof of the intent element of the crime.27 And intent was at issue-whether Thomas "knowingly and intentionally utilize[d] an electronic communication device to contact ... a peace officer who is believed by [Thomas] to be a child under sixteen years of age."28 Evidence that Thomas carried on a sexually explicit chat with a 13-year-old girl is probative as to his motive in texting with the decoy, purportedly a 14-year-old girl, and arranging to meet her. We conclude the district court did not abuse its discretion in admitting the Wolfgirl conversation to show motive.
(b) Absence of Mistake or Accident
Next, we must consider whether the district court properly admitted the evidence of the prior bad acts to show absence of mistake or accident. In Trotter ,29 we discussed when prior bad acts are relevant to show absence of mistake or accident in child abuse cases. Where a defendant does not raise accident or mistake as to how the victim was injured, the evidence is inadmissible for that purpose. We reasoned that the evidence of spousal abuse did not negate the claim of accident in the child abuse case, because the State proffered the evidence to show the propensity of someone who abused people in general. The evidence was inadmissible as to absence of mistake or accident.
Here, the court also admitted the evidence of the Wolfgirl conversation to show absence of mistake or accident. Under § 28-833, a defendant can be found guilty of the crime when he or she communicates with a peace officer whom he or she believed to be a child under the age of 16. Here, the State was **978required to prove that Thomas believed the decoy was a child under 16 years of age. It could do so by presenting direct evidence of Thomas' belief or, inversely, by presenting evidence that there was an absence of mistake as to his belief of the age of the decoy. Therefore, the belief or absence of mistake of belief as to the decoy's age was a relevant issue in the case.30
One of the dissents makes a distinction between the two types of recipients under § 28-833, but we disagree that the distinction is of consequence. The evil that the statute is aimed at is stopping individuals 19 years of age or over from knowingly and intentionally using an electronic communication device to transmit inappropriate material to a child under 16 years of age. Whether the inappropriate material is directed to an actual child or to a person that the transmitter believes to be a child is of little importance. To be guilty, the transmitter must know that the child is under age 16 (for an actual child) or believe the recipient is a child under age 16 (for a decoy). Undoubtedly, a common defense *725in such prosecutions is that the transmitter did not know (for an actual child) or believe (for a decoy) that the recipient was a child under age 16. In such a situation, the State would want to show that the transmitter was not mistaken (absence of mistake) about the recipient's age, i.e., that the transmitter intended (absence of accident) to transmit inappropriate material to a child under age 16.
Because the belief of the age of the decoy was relevant, we must determine if the Wolfgirl conversation had independent relevance. In order to show that Thomas did not have a mistaken belief as to the age of the decoy, the State presented evidence of other instances of Thomas' belief or absence of mistake. The Wolfgirl chat evidence contained direct statements by the victim that she was 13 years old and showed Thomas' nonchalance to her age. The conversation between Thomas and the decoy was similar, because the decoy expressly stated she was 14 years old and Thomas continued with the conversation **979unaffected. In both instances, Thomas never questioned the recipient's statement of age or, in any way, was led to believe that she was of a different age.
The Wolfgirl evidence negated the defense that Thomas did not believe the decoy was her claimed age. Such evidence tends to show that Thomas did not mistakenly believe he was chatting with an adult; instead, he targeted minors. Even though the Wolfgirl chat was between Thomas and a child under 16 years of age rather than a peace officer pretending to be a child under 16 years of age, the evidence offered the same probative nature as to Thomas' belief of the recipient's explicitly stated age. The evidence shows not Thomas' general propensity to talk to underage women, but, rather, that there was no mistake regarding Thomas' knowledge of the recipient's age. Similarly, in Zahursky ,31 the Seventh Circuit stated that "[t]he revelations of the girls' ages in the chats make the chat evidence probative as to [the defendant's] knowledge and absence of mistake" as to the recipients' ages. The Wolfgirl evidence was independently relevant. Therefore, we find no abuse of discretion by the district court in determining the evidence was relevant to show absence of mistake or accident.
(c) Probative Value Versus Unfair Prejudice
Having found no abuse of discretion by the district court in determining that the Wolfgirl conversation was relevant for the specified limited purposes, we must also review for abuse of discretion the court's balancing of unfair prejudice against probative value. Evidence that is admissible under rule 404(2) may be excluded under Neb. R. Evid. 403, Neb. Rev. Stat. § 27-403 (Reissue 2016), if its probative value is substantially outweighed by the danger of unfair prejudice.32 As the rule plainly states, only when the danger of unfair prejudice **980substantially outweighs the evidence's probative value does rule 403 counsel exclusion. And again, we emphasize that we review the decision only for an abuse of discretion.
The probative value of evidence involves a measurement of the degree to which the evidence persuades the trier of fact that the particular fact exists and the distance of the fact from the ultimate issue of the case.33 Most, if not all, evidence offered by a party is calculated to *726be prejudicial to the opposing party.34 Only evidence tending to suggest a decision on an improper basis is unfairly prejudicial.35 Balancing the probative value of evidence against the danger of unfair prejudice is within the discretion of the trial court, whose decision we will not reverse unless there is an abuse of discretion.36 The district court found that the probative value of the Wolfgirl conversation was not substantially outweighed by the danger of unfair prejudice.
(i) Redaction Not Raised or Preserved
One of the dissenting opinions seems to suggest that the exhibit should have been redacted, but neither of its suggestions is properly before us.
Although that dissent first argues that the images should have been redacted, Thomas did not raise the issue on appeal. Before the district court, Thomas, in a summary fashion, did request redaction of the images. There, he preserved the issue.37 But on appeal, he simply does not raise redaction of the images. An alleged error must be both specifically assigned and specifically argued in the brief of the party asserting the error to be considered by an appellate court.38 His assignment **981asserted that the district court erred "in admitting evidence of the Wolfgirl chat under Evidence Rule 404." The assignment does not mention either redaction or rule 403. While his argument does discuss rule 403, it does so only in the context of the entire exhibit. He does not argue that the images should have been redacted. Thus, with respect to the images, Thomas has placed the issue before us on an "all or nothing" basis.
That dissent also suggests that several pages of the exhibit "would have accomplished the State's needs." But Thomas never sought redaction of part of the text. And he had the burden of doing so.
Even if there are inadmissible parts within an exhibit, an objection to an exhibit as a whole is properly overruled where a part of the exhibit is admissible.39 A learned treatise explains:
Suppose that evidence sought to be introduced consists of several statements or items tendered as a unit in a deposition, letter, conversation, or trial transcript. Assume that the opponent objects to the whole of the evidence when some parts are subject to the objection made but other parts are not. In this situation, the judge does not err by overruling the objection. It is not the judge's responsibility to sever the bad parts if some are good. That is the opponent's burden.40
*727**982Thus, to the extent the dissent suggests that redaction of part of the text of the Wolfgirl chat should have occurred (apparently on the district court's own initiative), it would reverse the district court on an issue not raised before that court. But that is not our function. An appellate court will not consider an issue on appeal that was not presented to or passed upon by the trial court.41 Because redaction of part of the text was not raised below, we cannot consider it here.
That dissent also discusses the concept of plain error, although it is not clear that it does so with respect to redaction. Neither of the cited cases involved rule 403 balancing or sua sponte redaction of an exhibit. Thus, we read the dissent's plain error discussion as an expression of its level of concern regarding the issue that is properly before us.
In other words, this leaves us where Thomas chose to place us-considering only the exhibit as a whole. We must determine whether the district court abused its discretion in determining that the unfair prejudice of the Wolfgirl chat evidence, in its entirety, did not substantially outweigh its probative value.
(ii) Balancing
The Wolfgirl conversation was highly probative to show motive and absence of mistake or accident as to the decoy's age. That 50-page conversation, containing sexually explicit photographs and language, certainly was prejudicial to Thomas. However, there were striking similarities between the Wolfgirl conversation and the charged offense. In both instances, Thomas asked about the recipient's age; when he learned she was underage, he persisted. In the remaining conversation, he ignored her signals that she was, in fact, underage. He sought pictures of both recipients, and in pursuit of his sexual gratification, he disregarded the respective assertions of age. The probative value of the conversation to show motive and absence of mistake or accident went to the heart of Thomas' defense.
**983Was the content of the Wolfgirl conversation so unfairly prejudicial that it substantially outweighed the high probative value? We conclude that it did not. In Chambers , the Seventh Circuit discussed the federal equivalent of the rule 403 balancing test as to several conversations with victims and the defendant and stated, "Sexual abuse of a child or the attempt thereof is a disgusting crime and any evidence of it is no doubt unfavorable to the defendant, but here it was not unfairly prejudicial."42 Several other circuits have held that admitting several sexually explicit images introduced as rule 404(2) evidence is not unfairly prejudicial.43 We agree with the federal courts that although the evidence was highly prejudicial in its nature, it was not unfairly prejudicial. And to the extent one of the dissenting opinions seems to suggest that the federal cases on rule 403 balancing are inconsistent with our own precedent, we disagree. We see no meaningful difference between the text of rule 403 and that of the equivalent federal rule. Nor do we see any difference in the standards articulated by courts applying these rules.
*728Thus, in light of the statutory text, our precedent applying it, and federal cases doing likewise with a nearly identical federal rule, we cannot say that the district court abused its discretion in determining that the probative value of the Wolfgirl evidence outweighed its prejudicial value.
Before moving to the next issue, we note that a casual reader might misinterpret references to the length of the exhibit as 50 "page[s]." We should emphasize that each "page" is a screenshot of the conversation and images displayed on the limited **984space of a cell phone's screen. And three of those pages display only a "Failed to Load" message. So, while the number of words on such a page varies considerably, the other 47 pages of the exhibit total about 2,529 words-or an average of only about 53 words per page.
(d) Limiting Instruction
The court instructed the jury to consider the evidence of the Wolfgirl conversation for the limited purpose of motive and absence of mistake or accident as to the elements of count 1. Before the jury heard any of the evidence concerning the Wolfgirl conversation, the court instructed the jury on the limiting instruction. Thomas did not raise an issue with the limiting instruction on appeal.
2. SUFFICIENCY OF EVIDENCE
The crime of enticement by electronic communication device, in relevant part, consists of the following:
A person commits the offense of enticement by electronic communication device if he or she is nineteen years of age or over and knowingly and intentionally utilizes an electronic communication device to contact a child under sixteen years of age or a peace officer who is believed by such person to be a child under sixteen years of age and in so doing:
(a) Uses or transmits any indecent, lewd, lascivious, or obscene language, writing, or sound [or]
....
(c) Offers or solicits any indecent, lewd, or lascivious act.44
Thomas argues that "[t]he sole use of the words 'to kiss or eat you out' cannot be ... lewd, lascivious or obscene ..." as a matter of law.45 He contends that these words do not conjure **985up repugnant sexual images. Thomas does not contend that the evidence was insufficient to support a conviction on count 1 for the remaining elements of the crime. Therefore, we address the sufficiency of the evidence only as to whether his writing or solicitation was "indecent, lewd, lascivious, or obscene," in violation of § 28-833.
Case law instructs us that the term of art "indecent, lewd, lascivious, or obscene," when used by the Legislature, is a context-based question of fact. In State v. Kass ,46 we analyzed a constitutional challenge to the same language. We identified the rule from State v. Kipf47 as the clear line to apply to narrow the reach of "indecent, lewd, lascivious, or obscene" in § 28-833. We held in Kipf that "the phrase in question is the use of language which conjures up repugnant sexual images."48 We further explained that the context of the language aids to determine whether the language is repugnant or not. There, we reasoned that coitus between two consenting adults as an *729expression of love is not repugnant and does not conjure up repugnant images. However, we further reasoned that coitus performed as violence is repugnant, as much as it is criminal. Moreover, because of the known or unknown identity of the other actual or would-be participant, an otherwise natural and fulfilling sexual act could be repugnant.49
In this case, the context of the sexual language conjured repugnant sexual images when exchanged between an adult and a 14-year-old child. Although Thomas' language, if aimed to a consenting adult, would not conjure up repugnant sexual images, here it was addressed to a person claiming to be 14 years old. As we said in Kipf , the known identity of the other would-be participant can turn an otherwise natural sexual act repugnant. Viewing the foregoing in the light most favorable **986to the prosecution, any rational trier of fact could have found that the solicitation in writing or otherwise by an adult to perform oral sex on a person whom the adult believed to be a 14-year-old child would conjure up repugnant sexual images. Therefore, there was sufficient evidence for the jury to find that Thomas used or transmitted indecent, lewd, lascivious, or obscene writing or offered or solicited any indecent, lewd, or lascivious act.
VI. CONCLUSION
We conclude that the district court did not abuse its discretion in admitting the rule 404 evidence of the Wolfgirl conversation as to motive and absence of mistake or accident. The evidence was sufficient for a jury to find the writing or solicitation "indecent, lewd, lascivious, or obscene" to support the conviction. We affirm the judgment of the district court.
AFFIRMED .