'Nullify' in the Bible

{What is the result} if some refused to believe? Their unbelief will not nullify the faithfulness of God, [will it]?

Therefore, do we nullify the law through faith? May it never be! But we uphold the law.

Now I am saying this: the law, that came after four hundred and thirty years, does not revoke a covenant previously ratified by God, in order to nullify the promise.