Genesis 15
13 Ref He said to Abram, "Know for sure that your seed will live as foreigners in a land that is not theirs, and will serve them. They will afflict them four hundred years.
14 Ref I will also judge that nation, whom they will serve. Afterward they will come out with great substance.
15 Ref But you will go to your fathers in peace. You will be buried in a good old age.
16 Ref In the fourth generation they will come here again, for the iniquity of the Amorite is not yet full."