Genesis 15:15-21

15 But you will die in peace and be buried at a very old age.
16 In the fourth generation your descendants will come back here, because the sin of the Amorites will not have run its course until then."
17 The sun had gone down, and it was dark. Suddenly a smoking oven and a flaming torch passed between the animal pieces.
18 At that time the LORD made a promise to Abram. He said, "I will give this land to your descendants. This is the land from the river of Egypt to the great river, the Euphrates.
19 It is the land of the Kenites, the Kenizzites, the Kadmonites,
20 the Hittites, the Perizzites, the Rephaim,
21 the Amorites, the Canaanites, the Girgashites, and the Jebusites."