After four generations your descendants will return here to this land, when the sin of the Amorites has run its course."
As the sun went down and it became dark, Abram saw a smoking firepot and a flaming torch pass between the halves of the carcasses.
So the LORD made a covenant with Abram that day and said, "I have given this land to your descendants, all the way from the border of Egypt to the great Euphrates River --
References for Genesis 15:18
the land of the Kenites, Kenizzites, Kadmonites,
Hittites, Perizzites, Rephaites,
Amorites, Canaanites, Girgashites, and Jebusites."