16 and said, By myself have I sworn, saith the LORD, 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.