13
And he said unto Abram, Know of a surety that thy seed shall be a stranger in a land that is not theirs, and shall serve them; and they shall afflict them four hundred years;
Genesis 15:16
16
But in the fourth generation they shall come hither again: for the iniquity of the Amorites is not yet full.
Genesis 15:18
18
In the same day the LORD made a covenant with Abram, saying, Unto thy seed have I given this land, from the river of Egypt unto the great river, the river Euphrates: