The answer of where Moses got Genesis has been answered by many Jewish and Christian scholars. Most non-Christians are not willing to actually study the many works of Christian scholarship and research. They prefer outside sources to tell them the problems of Christianity. Non-Christians trying to tell Christians what they believe and saying it with a supposed authority is an interesting phenomenon. Sometimes it feels a bit like when altcoiners try to give me the inside scoop of what bitcoin maximalists believe and why it’s wrong.