Cain's murder of Abel (the first murder ever), we see the dead Abel and Cain has blood on his hands. God marks him with a black scar in his forehead, and Adam and Eve bury Abel in grief.
The children of Cain stab at something, possibly a human, as a sacrifice for idols. We see the motion, but nothing in detail.
Noah is mocked by tribal-looking people with animal skull regalia. The Great Flood wipes out all the living things in the earth, save Noah, his family, and the animals on the ark. Nothing violent, other than the thundering.
The crashing of the scaffolds on the Tower of Babel, not too graphic. Nimrod shoots an arrow towards the sky.
Abraham fights with the armies that captured Lot, his brother's son.
A mushroom cloud-like destruction of Sodom and Gomorrah, and we see Lot's wife turn into a pillar of salt. Everyone in Sodom and Gomorrah dies, but the movie implies that.
Abraham is about to sacrifice his son, Isaac, towards the end. We see a snake crawl out of a child's skull.
Abraham has a vision that requires him to "divide" animals, and we see the carcasses with blood on a stone altar.