Genesis 15:12

10He brought him all these, and divided them in the middle, and laid each half opposite the other; but he didn’t divide the birds.

11The birds of prey came down on the carcasses, and Abram drove them away.

12When the sun was going down, a deep sleep fell on Abram. Now terror and great darkness fell on him.

13He said to Abram, “Know for sure that your offspring will live as foreigners in a land that is not theirs, and will serve them. They will afflict them four hundred years.

14I will also judge that nation, whom they will serve. Afterward they will come out with great wealth;