Genesis 15:12-16 New King James Version
12 Now when the sun was going down, a deep sleep fell upon Abram; and behold, horror and great darkness fell upon him. 13 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. 14 And also the nation whom they serve I will judge; afterward they shall come out with great possessions. 15 Now as for you, you shall [a]go to your fathers in peace; you shall be buried at a good old age. 16 But in the fourth generation they shall return here, for the iniquity of the Amorites is not yet complete.”