Exodus 12:40-42 NLT
The people of Israel had lived in Egypt for 430 years. In fact, it was on the last day of the 430th year that all the LORD’s forces left the land. On this night the LORD kept his promise to bring his people out of the land of Egypt. So this night belongs to him, and it must be commemorated every year by all the Israelites, from generation to generation.
NLT: New Living Translation