Acts 7:6
"This is what God promised: His descendants would be strangers in a foreign country, and its people would enslave them and oppress them for 400 years.
Genesis 15:13
Then the LORD told Abram, "You can be certain about this: Your descendants will be foreigners in a land that isn't theirs. They will be slaves there and will be oppressed for 400 years.
Genesis 15:16
Your descendants will return here in the fourth generation, since the iniquity of the Amorites has not yet run its course."
Exodus 12:40-41
Now the time that the Israelis lived in Egypt was 430 years.
Galatians 3:17
This is what I mean: The Law that came 430 years later did not cancel the covenant that God ratified previously. The promise was never nullified.