NSB(i)
16 The promises were spoken to Abraham and to his seed. He did not say to seeds, as of many; but as of one, And to your seed, which is Christ.
17 Now this I say: the Law, which came four hundred and thirty years later, does not invalidate a covenant previously ratified by God, so as to nullify the promise.
18 If the inheritance is based on the Law, it is no longer based on a promise. However God granted it to Abraham by means of a promise.