[15] And thou shalt go to thy fathers in peace; thou shalt be buried in a good old age. [16] But in the fourth generation they shall come hither again: for the iniquity of the Amorites is not yet full. [17] And it came to pass, that, when the sun went down, and it was dark, behold a smoking furnace, and a burning lamp that passed between those pieces. [18] In the same day the LORD made a covenant with Abram, saying, Unto thy seed have I given this land, from the river of Egypt unto the great river, Euphrates: