You apparently never read Barak Obama's two autobiographies. A legend in his own mind, that one is.
Read Genesis from 1:1 to where Noah appears in 5:26 and you will notice .... almost no information of how the original Jews based their religious life and what codes they lived by.
We can discern from the eden story that we should obey God, and shouldn't lie. And from the Cain and Able story that murder is wrong and that God seems to approve of the idea of sacrifice..
and that's about it.