Acts 7:6

And God spoke thus: His seed would be alien in a foreign land, and they would enslave and mistreat them four hundred years.

Genesis 15:13

And he said to Abram, Know of a certainty that thy seed shall be sojourners in a land that is not theirs. And shall serve them, and they shall afflict them four hundred years.

Genesis 15:16

And in the fourth generation they shall come here again, for the iniquity of the Amorite is not yet full.

Exodus 12:40-41

Now the time that the sons of Israel dwelt in {the land of Egypt and the land of Canaan (LXX)} was four hundred and thirty years.

Galatians 3:17

And I say this, a covenant previously confirmed by God in Christ, the law, which happened four hundred and thirty years after, does not annul in order to make the promise useless.

Treasury of Scripture Knowledge

Summary

And God spake 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.

Bible References

That

Genesis 15:13
And he said to Abram, Know of a certainty that thy seed shall be sojourners in a land that is not theirs. And shall serve them, and they shall afflict them four hundred years.

Four

Exodus 12:40
Now the time that the sons of Israel dwelt in {the land of Egypt and the land of Canaan (LXX)} was four hundred and thirty years.
Galatians 3:17
And I say this, a covenant previously confirmed by God in Christ, the law, which happened four hundred and thirty years after, does not annul in order to make the promise useless.