Genesis 13:9

6 The land was not able to bear them, that they might live together: for their substance was great, so that they could not live together.

7 There was a strife between the herdsmen of Abram's livestock and the herdsmen of Lot's livestock: and the Canaanite and the Perizzite lived in the land at that time.

8 Abram said to Lot, "Please, let there be no strife between me and you, and between my herdsmen and your herdsmen; for we are relatives.

9 Isn't the whole land before you? Please separate yourself from me. If you go to the left hand, then I will go to the right. Or if you go to the right hand, then I will go to the left."

10 Lot lifted up his eyes, and saw all the plain of the Jordan, that it was well-watered everywhere, before the Lord destroyed Sodom and Gomorrah, like the garden of the Lord, like the land of Egypt, as you go to Zoar.

11 So Lot chose the Plain of the Jordan for himself. Lot traveled east, and they separated themselves the one from the other.

12 Abram lived in the land of Canaan, and Lot lived in the cities of the plain, and moved his tent as far as Sodom.