And "if you--whether Jews or Greeks--are Christ's, then are you Abraham's seed, heirs in terms of the Promise." So the Apostle brings to a close this part of his argument, and links it to what he has said before touching the fatherhood of Abraham. Since ver. 18 we have lost sight of the patriarch; but he has not been forgotten. From that verse Paul has been conducting us onward through the legal centuries which parted Abraham from Christ. He has shown how the law of Moses interposed between promise and fulfilment, schooling the Jewish race and mankind in them for its accomplishment. Now the long discipline is over. The hour of release has struck. Faith resumes her ancient sway, in a larger realm. In Christ a new, universal humanity comes into existence, formed of men who by faith are grafted into Him. Partakers of Christ, Gentiles also are of the seed of Abraham; the wild scions of nature share "the root and fatness of the good olive-tree." All things are theirs; for they are Christ's (1 Cor. iii. 21-23). Christ never stands alone. "In the midst of the Church--firstborn of many brethren" He presents Himself, standing "in the presence of God for us." He has secured for mankind and keeps in trust its glorious heritage. In Him we hold in fee the ages past and to come. The sons of God are heirs of the universe. CHAPTER XVI. _THE HEIR'S COMING OF AGE._ "But I say that so long as the heir is a child, he differeth nothing from a bondservant, though he is lord of all; but is under guardians and stewards until the term appointed of the father. So we also, when we were children, were held in bondage under the rudiments of the world: but when the fulness of the time came, God sent forth His Son, born of a woman, born under the law, that He might redeem them which were under the law, that we might receive the adoption of sons. And because ye are sons, God sent forth the Spirit of His Son into our hearts, crying, Abba Father. So that thou art no longer a bondservant, but a son; and if a son, then an heir through God."--GAL. iv. 1-7. The main thesis of the Epistle is now established. Gentile Christians, Paul has shown, are in the true Abrahamic succession of faith. And this devolution of the Promise discloses the real intent of the Mosaic law, as an intermediate and disciplinary system. Christ was the heir of Abraham's testament; He was therefore the end of Moses' law. And those who are Christ's inherit the blessings of the Promise, while they escape the curse and condemnation of the Law. The remainder of the Apostle's polemic, down to ch. v. 12, is devoted to the illustration and enforcement of this position.