Ten generations there were from Noah to Abraham, to show how great is the clemency of God, for all the generations provoked His wrath, until Abraham our father came and received the reward of all of them. For the sake of Abraham God had shown himself long-suffering and patient during the lives of these ten generations. Yea, more, the world itself had been created for the sake of his merits. His advent had been made manifest to his ancestor Reu, who uttered the following prophecy at the birth of his son Serug: "From this child he shall be born in the fourth generation that shall set his dwelling over the highest, and he shall be called perfect and spotless, and shall be the father of nations, and his covenant shall not be dissolved, and his seed shall be multiplied forever."
It was, indeed, high time that the "friend of God" should make his appearance upon earth. The descendants of Noah were sinking from depravity to lower and lower depths of depravity. They were beginning to quarrel and slay, eat blood, build fortified cities and walls and towers, and set one man over the whole nation as king, and wage wars, people against people, and nations against nations, and cities against cities, and do all manner of evil, and acquire weapons, and teach warfare unto their children. And they began also to take captives and sell them as slaves. And they made unto themselves molten images, which they worshipped, each one the idol he had molten for himself, for the evil spirits under their leader Mastema led them astray into sin and uncleanness. For this reason Reu called his son Serug, because all mankind had turned aside unto sin and transgression. When he grew to manhood, the name was seen to have been chosen fittingly, for he, too, worshipped idols, and when he himself had a son, Nahor by name, he taught him the arts of the Chaldees, how to be a soothsayer and practice magic according to signs in the heavens. When, in time, a son was born to Nahor, Mastema sent ravens and other birds to despoil the earth and rob men of the proceeds of their work. As soon as they had dropped the seed in the furrows, and before they could cover it over with earth, the birds picked it up from the surface of the ground, and Nahor called his son Terah, because the ravens and the other birds plagued men, devoured their seed, and reduced them to destitution.