Genesis 15:16 YLT

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.'

¹⁷  And it cometh to pass -- the sun hath gone in, and thick darkness hath been -- and lo, a furnace of smoke, and a lamp of fire, which hath passed over between those pieces.

¹⁸  In that day hath Jehovah made with Abram a covenant, saying, 'To thy seed I have given this land, from the river of Egypt unto the great river, the river Phrat,