Galatians 3:17,18

Gal. 3:17, 18. "And this I say, that the covenant that was confirmed before of God in Christ, the law which was four hundred and thirty years after, cannot disannul, that it should make the promise of none effect; for if the inheritance be of the law, it is no more of promise, but God gave it to Abraham by promise." Mr. Locke paraphrases it thus, "This therefore I say, that the law, which was not till four hundred and thirty years after, cannot disannul the covenant that was long before made and ratified to Christ by God, so as to set aside the promise. For if the right to the inheritance be from the works of the law, it is plain it is not founded in the promise to Abraham, as certainly it is. For the inheritance was a donation and free gift of God settled on Abraham and his seed by promise."

Gal. 3:19-20