Galatians 3:15-18

Brothers and sisters, I give an example from daily life: once a person’s will has been ratified, no one adds to it or annuls it. Now the promises were made to Abraham and to his offspring; it does not say, ‘And to offsprings’, as of many; but it says, ‘And to your offspring’, that is, to one person, who is Christ. My point is this: the law, which came four hundred and thirty years later, does not annul a covenant previously ratified by God, so as to nullify the promise. For if the inheritance comes from the law, it no longer comes from the promise; but God granted it to Abraham through the promise.