I have heard two or three times recently that Moses supposedly wrote Genesis. Besides tradition, what is the evidence that this is true? Does it matter to you that it is or not Moses who wrote it? I think it just as likely that it is someone that we don't even know the name of or that played a minor role in the Bible story. I suppose the argument for Moses may be that he spent an awful lot of time talking with God and that he was well educated when he grew up in Egypt and probably had good writing ability
The New Testament confirms that Moses wrote Genesis and the other first four books of the Bible:
Mrk_12:19 “Teacher, Moses wrote for us that if a man's brother dies and leaves a wife, but leaves no child, the man must take the widow and raise up offspring for his brother.
Mrk_12:26 And as for the dead being raised, have you not read in the book of Moses, in the passage about the bush, how God spoke to him, saying, ‘I am the God of Abraham, and the God of Isaac, and the God of Jacob’?
Luk_24:27 And beginning with Moses and all the Prophets, he interpreted to them in all the Scriptures the things concerning himself.
Luk_24:44 Then he said to them, “These are my words that I spoke to you while I was still with you, that everything written about me in the Law of Moses and the Prophets and the Psalms must be fulfilled.”
Jhn_1:17 For the law was given through Moses; grace and truth came through Jesus Christ.
Jhn_5:46 For if you believed Moses, you would believe me; for he wrote of me.
Act_26:22 To this day I have had the help that comes from God, and so I stand here testifying both to small and great, saying nothing but what the prophets and Moses said would come to pass: