Genesis 15:9-17

9And he said unto him, Take me an heifer of three years old, and a she-goat of three years old, and a ram of three years old, and a turtledove, and a young pigeon.

10And he took him all these, and divided them in the midst, and laid each half over against the other: but the birds divided he not.

11And the birds of prey came down upon the carcases, and Abram drove them away.

12And when the sun was going down, a deep sleep fell upon Abram; and, lo, an horror of great darkness fell upon him.

13And he said unto Abram, Know of a surety that thy seed shall be a stranger in a land that is not theirs, and shall serve them; and they shall afflict them four hundred years;

14and also that nation, whom they shall serve, will I judge: and afterward shall they come out with great substance.

15But thou shalt go to thy fathers in peace; thou shalt be buried in a good old age.

16And in the fourth generation they shall come hither again: for the iniquity of the Amorite is not yet full.

17And it came to pass, that, when the sun went down, and it was dark, behold a smoking furnace, and a flaming torch that passed between these pieces.