(In response to: "Is there evidence of plagiarism within the Holy Bible— and if so, what is it?")

Plagarism is not the right term here. The Bible quotes and paraphrases itself in different passages. We see this in New Testament quotations of the Old Testament in many places, and the texts do not use a modern format of citation for stating where a quoted passage comes from. It’s not plagarism, because it quotes itself, and (by inspiration) the same God who inspired the Bible books uses the same quotes in different parts. There are cases where the Bible refers to the Book of Jashar (Joshua 10:13; 2 Samuel 1:18) and books of the Kings of Israel (I Kings 14:19). It quotes from the book of Enoch (Jude 9) about the body of Moses. Since many of the quotes are internal quotes, or are not documentable by modern standards, plagarism is not the right word.