Genesis 15:13,14 And he said to Abram, Know of a surety that your seed shall be a stranger in a land that is not their's, and shall serve them; and they shall afflict them four hundred years; Nave's Topical Index
Acts 7:6,7 And God spoke on this wise, That his seed should sojourn in a strange land; and that they should bring them into bondage, and entreat them evil four hundred years. Nave's Topical Index