Genesis 22:16-18

16and said, By myself I swear, saith Jehovah, that, because thou hast done this, and hast not withheld thy son, thine only [son],

17I will richly bless thee, and greatly multiply thy seed, as the stars of heaven, and as the sand that is on the sea-shore; and thy seed shall possess the gate of his enemies;

18and in thy seed shall all the nations of the earth bless themselves, because thou hast hearkened to my voice.