Galatians 3:16; Galatians 3:19; Galatians 3:29

16 Now to Abraham and his seed were the promises made. He saith not, And to seeds, as of many; but as of one, And to thy seed, which is Christ.

19 Wherefore then serveth the law? It was added because of transgressions, till the seed should come to whom the promise was made; and it was ordained by angels in the hand of a mediator.

29 And if ye be Christ's, then are ye Abraham's seed, and heirs according to the promise.