Genesis 13:14-18

The LORD said to Abram, after Lot had separated from him, “Now lift up your eyes and look from the place where you are, northward and southward and eastward and westward; for all the land which you see, I will give it to you and to your descendants forever. I will make your descendants as the dust of the earth, so that if anyone can number the dust of the earth, then your descendants can also be numbered. Arise, walk about the land through its length and breadth; for I will give it to you.” Then Abram moved his tent and came and dwelt by the oaks of Mamre, which are in Hebron, and there he built an altar to the LORD.