Geneis 4, 6-9

        4. When Abel and Cain offered their respective gifts, God finds favor in Abel, and Cain becomes angry. Cain kills Abel, and his punishment is he can't farm and will not be murdered. As a farmer who loves his work, He wanted to die but he would not. God didn't prevent Abel's death but he protects Abel's murderer.
         It doesn't make sense, Lemech kills a man like Cain did, and says he will be avenged 77 times! Is murder justified if the victim wronged the murderer?
         The the story of Noah's ark God is repulsed by his own creation, yet instead of killing everything and starting over, he wants to preserve Noah's family and 2 of each animal. Its odd how speficif the time scale is. Or the fact that Noah is 600 years old in the story. But Gd enjoys the smell of live animals being sacrificed to him appease him. Noah and Abel had offered animals to God and both times God was pleased. When Cain offered fruit, God was not impressed. What does this say about God in these myths? At the same time, the Cain and Abel myth is a contradiction to the Noah's Ark because in ninth chapter the Lord says:
“Whoever sheds human blood,
   by humans shall their blood be shed;
for in the image of God
   has God made mankind."
Yet when Cain kills Abel God makes it clear no one will kill him, his blood therefore will not be shed. Why is that? It seems like these are different gods! In the second part of  the ninth chapter Noah is drunk and sleeping naked, Canaan get punished because his father saw him naked while Shem and Japheth covered Noah. That's an interesting way to punish someone, by cursing their descendants. This a common theme in the old testament, in one instance God tells his followers that those who worship false idols will have their descendants cursed.
5. Civilization rises through consumption, the ate of eating another. One tribe devours another, whether by force or by diplomacy. The tribe increases in size as it merges. The same principle applies to glaxies, our Milky Way galaxy is as big as it is through the merging of galaxies, in fact the Milky Way is eating two galaxies right now. Even though in the story Cain didn't murder Abel in order to found a city, it is true that God preserved him, and later did build a city.