Genesis 15:13

15:13 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.
-World English Bible

Other Translation

15:13 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;
-King James Version