Follow up. Is there anything known about the precursor faiths to Judaism if there are any?

Not sure if this is related, but I've also wondered about monotheism and idolaltry. Its interesting to me that all three Abrahamic religions are very strongly against idolatry. What was it a reaction against?

This question has come up before and been answered very well. You should find what you're looking for if you use the search bar to look for "Jews" and "monotheism"