Acts 7:6-7

6This is what God said to him: “Your descendants will live in a foreign country for 400 years. The people in that country will cause your descendants to be their slaves. They will be very cruel to them.

7But I will punish those people who cause your descendants to work as slaves for them. After I have done that, your descendants will leave that country. They will come to this place and worship me here.” That is what God said to Abraham.