Genesis 15:7-17

7And he said to him, I am Jehovah who brought thee out of Ur of the Chaldeans, to give thee this land to possess it.

8And he said, Lord Jehovah, how shall I know that I shall possess it?

9And he said to him, Take me a heifer of three years old, and a she-goat of three years old, and a ram of three years old, and a turtle-dove, and a young pigeon.

10And he took all these, and divided them in the midst, and laid the half of each opposite its fellow; but the birds he did not divide.

11And the birds of prey came down on the carcases; and Abram scared them away.

12And as the sun was just going down, a deep sleep fell upon Abram; and behold, a horror, a great darkness, fell upon him.

13And he said to Abram, Know assuredly that thy seed will be a sojourner in a land [that is] not theirs, and they shall serve them; and they shall afflict them four hundred years.

14But also that nation which they shall serve I will judge; and afterwards they shall come out with great property.

15And 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 Amorites is not yet full.

17And it came to pass when the sun had gone down, and it was dark, that behold, there was a smoking furnace, and a flame of fire which passed between those pieces.