BLB(i)
15 Brothers, I am speaking according to man. No one sets aside or adds thereto a covenant even of man, having been ratified.
16 Now the promises were spoken to Abraham and to his seed. It does not say “and to seeds” as of many but “and to your seed” as of One, who is Christ.
17 Now I say this: The Law, having come four hundred and thirty years afterward, does not annul the covenant having been confirmed beforehand by God, so as to nullify the promise.
18 For if the inheritance is by the Law, it is no longer by a promise. But God has granted it to Abraham through a promise.
19 Why then the Law? It was added on account of transgressions, until the seed to whom promise has been made should have come, having been ordained through angels in the hand of a mediator.
20 However, a mediator is not of one; but God is one.
21 Is the Law therefore contrary to the promises of God? Never may it be! For if a law had been given being able to impart life, then righteousness indeed would have emerged from out of the Law.