Genesis 13:8-11

8And Abram said to Lot, I pray thee let there be no contention between me and thee, and between my herdsmen and thy herdsmen, for we are brethren.

9Is not the whole land before thee? Separate thyself, I pray thee, from me: if to the left, then I will take the right; and if to the right, then I will take the left.

10And Lot lifted up his eyes, and beheld all the plain of the Jordan that it was thoroughly watered, before Jehovah had destroyed Sodom and Gomorrah; as the garden of Jehovah, like the land of Egypt, as one goes to Zoar.

11And Lot chose for himself all the plain of the Jordan; and Lot went toward the east. And they separated the one from the other: