Creation is good and the first humans are very good. They are set in the Garden of Eden, to tend it, be fruitful and multiply, fill the earth and subdue it. The entire human race appears to start out united, children of the same parents. After the first Shabbat, God returns to find the humans changed, conscious of death, of moral choice, of having done wrong. Rather than kill them, God gives them new, harsh instructions for a difficult life of conscious decisions.
Human history begins with exile and precedes to violent competition.
Cain jealously thinks of killing his brother Abel. God tries to change Cain s mind but fails. After the murder, God, perhaps feeling responsible, spares him. Kings and kingdoms rise. Edged weapons are invented.