Genesis 13:14-18

14And Jehovah said to Abram, after that Lot had separated himself from him, Lift up now thine eyes, and look from the place where thou art, northward and southward and eastward and westward; 15for all the land that thou seest will I give to thee, and to thy seed for ever. 16And I will make thy seed as the dust of the earth, so that if any one can number the dust of the earth, thy seed also will be numbered. 17Arise, walk through the land according to the length of it and according to the breadth of it; for I will give it to thee. 18Then Abram moved [his] tents, and came and dwelt by the oaks of Mamre, which are in Hebron. And he built there an altar to Jehovah.