Exploring Entropy and the Origin of the Universe

Questions about whether matter and energy already existed before the Big Bang, how to respond to a Christian friend who believes Genesis 1 and Genesis 2 describe two separate creation events with two sets of humans, and the source of Moses’ creation information.  

• What do you think of the argument that matter and energy already existed before the Big Bang—that it was compacted by gravity, then the Big Bang happened, then repeat?
• How would you respond to a Christian friend who believes Genesis 1 and Genesis 2 are two separate creation events with two sets of humans being created?
• From what source did Moses obtain his creation information?