Genesis 22:15-18

15The Angel of the Lord called to Abraham from heaven a second time

16and said, “By Myself (on the basis of Who I Am) I have sworn [an oath], declares the Lord, that since you have done this thing and have not withheld [from Me] your son, your only son [of promise],

17indeed I will greatly bless you, and I will greatly multiply your seed like the stars of the heavens and like the sand on the seashore; and your seed shall possess the gate of their enemies [by conquering them].

18Through your seed all the nations of the earth shall be blessed, because you have heard and obeyed My voice.”