15 Brothers, I am speaking in human terms: Though it is only a man’s covenant, yet if it is ratified, no one annuls or adds to it.
16 Now the promises were made to Abraham and his Seed. He does not say, “and to seeds,” meaning many, but “and to your Seed,” meaning one, who is Christ.
17 And this I say, that the law, which came four hundred and thirty years later, does not annul the covenant that was ratified by God in Christ, so as to nullify the promise.
18 For if the inheritance comes from the law, it no longer comes from the promise. But God gave it to Abraham through a promise.
19 What purpose then does the law serve? It was added because of transgressions, until the Seed should come to whom the promise was made. And it was ordained through angels by the hand of a mediator.
20 Now a mediator is not a mediator for only one party, but God is one.
21 Is the law then contrary to the promises of God? God forbid! For if there had been a law given which could have given life, righteousness would indeed come through the law.