Galatians 3:15-18 - The Promise To Abraham And His Descendant
15 Let me illustrate, brothers, from every-day life. When once a human testament is made, and formally ratified, no one sets it aside or adds to it. 16 Now it was to Abraham that the promises were spoken, and to his offspring. God did not say, "offsprings" as if speaking of many, but "and to your offspring," as of one; and this is Christ. 17 I mean to say that the testament which God has already ratified could not be annulled by the Law which came four hundred and thirty years later, so as to make the Promise void. 18 For if the inheritance comes from law, it no longer comes from a promise; but God did give it as a free gift to Abraham by a promise.