Acts 7:6

And God spoke to this effect--that his offspring would be sojourners in a land belonging to others, who would enslave them and afflict them four hundred years.

Genesis 15:13

Then the LORD said to Abram, "Know for certain that your offspring will be sojourners in a land that is not theirs and will be servants there, and they will be afflicted for four hundred years.

Genesis 15:16

And they shall come back here in the fourth generation, for the iniquity of the Amorites is not yet complete."

Exodus 12:40-41

The time that the people of Israel lived in Egypt was 430 years.

Galatians 3:17

This is what I mean: the law, which came years afterward, does not annul a covenant previously ratified by God, so as to make the promise void.

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
Then the LORD said to Abram, "Know for certain that your offspring will be sojourners in a land that is not theirs and will be servants there, and they will be afflicted for four hundred years.

Four

Exodus 12:40
The time that the people of Israel lived in Egypt was 430 years.
Galatians 3:17
This is what I mean: the law, which came years afterward, does not annul a covenant previously ratified by God, so as to make the promise void.

The Holy Bible, English Standard Version® copyright © 2001 by Crossway Bibles, a publishing ministry of Good News Publishers.