16 and said, "‘I have sworn by myself,’ says the LORD, ‘because you have done this thing, and have not withheld your son, your only son, 17 that I will bless you greatly, and I will multiply your offspring greatly like the stars of the heavens, and like the sand which is on the seashore. Your offspring will possess the gate of his enemies. 18 All the nations of the earth will be blessed by your offspring, because you have obeyed my voice.’"