Galatians 3:15-18

¹⁵Brothers and sisters, I speak in terms of human relations: even though it is only a man’s covenant, yet when it has been ratified, no one sets it aside or adds conditions to it. ¹⁶Now the promises were spoken to Abraham and to his seed. He does not say, “And to seeds,” as one would in referring to many, but rather as in referring to one, “And to your seed,” that is, Christ. ¹⁷What I am saying is this: the Law, which came 430 years later, does not invalidate a covenant previously ratified by God, so as to nullify the promise. ¹⁸For if the inheritance is based on law, it is no longer based on a promise; but God has granted it to Abraham by means of a promise.