Exodus 12:40-41

12:40 Now the length of time the Israelites lived in Egypt was 430 years. 12:41 At the end of the 430 years, on the very day, all the regiments of the Lord went out of the land of Egypt.

Galatians 3:17

3:17 What I am saying is this: The law that came four hundred thirty years later does not cancel a covenant previously ratified by God, so as to invalidate the promise.