Genesis 13:14-18 - The Lord's Third Promise To Abram
14 And the LORD said unto Abram, after that Lot was departed from him, "Lift up thine eyes and look from the place where thou art, northward, southward, eastward and westward, 15 for all the land which thou seest will I give unto thee and to thy seed for ever. 16 And I will make thy seed as the dust of the earth: so that if a man can number the dust of the earth, then shall thy seed also be numbered. 17 Arise, and walk about in the land, in the length of it and in the breadth, for I will give it unto thee."
18 Then Abram took down his tent, and went and dwelled in the oak grove of Mamre, which is in Hebron; and built there an altar to the LORD.