Acts 7:6

God spoke to this effect, that his seed would be alien residents in a strange land. They would enslave them, and mistreat them for four hundred years.

Genesis 15:13

Jehovah said to Abram: Know this for sure; your offspring will be strangers (aliens) in a land that is not theirs. They will be slaves there, and they shall be oppressed for four hundred years.

Genesis 15:16

They shall come back here in the fourth generation. The iniquity of the Amorites is not yet complete.

Exodus 12:40-41

The Israelites had been living in Egypt for four hundred and thirty years.

Galatians 3:17

Now this I say: the Law, which came four hundred and thirty years later, does not invalidate a covenant previously ratified by God, so as to nullify the promise.

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
Jehovah said to Abram: Know this for sure; your offspring will be strangers (aliens) in a land that is not theirs. They will be slaves there, and they shall be oppressed for four hundred years.

Four

Exodus 12:40
The Israelites had been living in Egypt for four hundred and thirty years.
Galatians 3:17
Now this I say: the Law, which came four hundred and thirty years later, does not invalidate a covenant previously ratified by God, so as to nullify the promise.