Then the LORD said to Abram, “Know for certain that your descendants will be strangers in a land that is not their own, and they will be enslaved and mistreated four hundred years.
Jewish Publication Society of America Version (JPS1917) - Genesis 15:13 >And He said unto Abram: 'Know of a surety that thy seed shall be a stranger in a land that is not theirs, and shall serve them; and they shall afflict them four hundred years;