Abrams People Would Be Oppressed 400 Years

Gen 15:13-14 Then He said to Abram: "Know certainly that your descendants will be strangers in a land that is not theirs, and will serve them, and they will afflict them four hundred years. "And also the nation whom they serve I will judge; afterward they shall come out with great possessions."

Link: https://bible-history.com/old-testament/abraham