Gal 3:15-20

The Law Did Not Nullify the Promise. 15^* Brothers, in human terms I say that no one can annul or amend even a human will once ratified.ⁿ 16Now the promises were made to Abraham and to his descendant.^* It does not say, “And to descendants,” as referring to many, but as referring to one, “And to your descendant,” who is Christ.^o 17This is what I mean: the law, which came four hundred and thirty years afterward,^* does not annul a covenant previously ratified by God, so as to cancel the promise.^p 18For if the inheritance comes from the law,^q it is no longer from a promise; but God bestowed it on Abraham through a promise.^*

19^* Why, then, the law? It was added for transgressions, until the descendant^* came to whom the promise had been made; it was promulgated by angels at the hand of a mediator.^r 20Now there is no mediator when only one party is involved, and God is one.^s