Galatians 3:15-18 - The Promise To Abraham And His Descendant
15 Brothers, as men would say, even a man's agreement, when it has been made certain, may not be put on one side, or have additions made to it. 16 Now to Abraham were the undertakings given, and to his seed. He says not, And to seeds, as of a great number; but as of one, he says, And to your seed, which is Christ. 17 Now this I say: The law, which came four hundred and thirty years after, does not put an end to the agreement made before by God, so as to make the undertaking without effect. 18 Because if the heritage is by the law, it is no longer dependent on the word of God; but God gave it to Abraham by his word.