Genesis 22:15-18 KJV

15 And the angel of the Lord called unto Abraham out of heaven the second time,

16 And said, By myself have I sworn, saith the Lord, for because thou hast done this thing, and hast not withheld thy son, thine only son:

17 That in blessing I will bless thee, and in multiplying I will multiply thy seed as the stars of the heaven, and as the sand which is upon the sea shore; and thy seed shall possess the gate of his enemies;

18 And in thy seed shall all the nations of the earth be blessed; because thou hast obeyed my voice.