The dispute over the body of Moses has been a topic rarely discussed but important. But most interestingly, Jude 9 is believed to quote from one of two ancient texts; “Assumption of Moses” or “Ascension of Moses“. Coincidentally I read the Ascension of Moses at the end of last year. The article below details both texts and forms a conclusion. Thank you and God bless you.

https://www.neverthirsty.org/bible-qa/qa-archives/question/jude-9-quote-assumption-moses/