Jubilees 7:26

'And we were left, I and you, my sons, and everything that entered with us into the ark, and behold I see your works before me that ye do not walk in righteousness: for in the path of destruction ye have begun to walk, and ye are parting one from another, and are envious one of another, and (so it comes) that ye are not in harmony, my sons, each with his brother.