As I understand it, God revealed himself to Abram as the true God. Before that, Jews worshiped Baal, and practiced human sacrifice, etc.. If Jews did not know the true God until the time of Abram, who was God in the Garden of Eden? Who put his mark on Cain? Who was God of the Flood? Was Noah righteous to Baal? If the true God destroyed everyone but Noah, Why wouldn’t all of his descendents know who the real God is? Where did these followers of Baal come from? It makes no sense. I’m looking for an academic answer please.