Genesis 15:13

10 and he taketh to him all these, and separateth them in the midst, and putteth each piece over against its fellow, but the bird he hath not divided;

11 and the ravenous birds come down upon the carcases, and Abram causeth them to turn back.

12 And the sun is about to go in, and deep sleep hath fallen upon Abram, and lo, a terror of great darkness is falling upon him;

13 and He saith to Abram, `knowing -- know that thy seed is a sojourner in a land not theirs, and they have served them, and they have afflicted them four hundred years,

14 and the nation also whom they serve I judge, and after this they go out with great substance;

15 and thou -- thou comest in unto thy fathers in peace; thou art buried in a good old age;

16 and the fourth generation doth turn back hither, for the iniquity of the Amorite is not yet complete.`