Genesis 15:13 Holman Christian Standard Bible (HCSB)
13 Then the Lord said to Abram, “Know this for certain: Your offspring will be foreigners in a land that does not belong to them; they will be enslaved and oppressed[a] 400 years.
Deuteronomy 26:5 Holman Christian Standard Bible (HCSB)
5 You are to respond by saying in the presence of the Lord your God:
My father was a wandering Aramean. He went down to Egypt with a few people and lived there. There he became a great, powerful, and populous nation.