Genesis 15:14-18

But I will also judge the nation whom they will serve, and afterward they will come out with many possessions.

As for you, you shall go to your fathers in peace; you will be buried at a good old age.

Then in the fourth generation they will return here, for the wrongdoing of the Amorite is not yet complete.”

Now it came about, when the sun had set, that it was very dark, and behold, a smoking oven and a flaming torch appeared which passed between these pieces.

On that day the Lord made a covenant with Abram, saying, “To your descendants I have given this land, From the river of Egypt as far as the great river, the river Euphrates: