*Minor differences ignored. Grouped by changes, with first version listed as example.
But after that faith is come. This phrase has been already considered. It denotes the brighter revelation of grace after that "the vail of the temple was rent in twain," (Matthew 27:51,) which, we know, was effected by the manifestation of Christ. He affirms that, under the reign of Christ, there is no longer any childhood which needs to be placed under a schoolmaster, and that, consequently, the law has resigned its office, -- which is another application of the comparison. There were two things which he had undertaken to prove, -- that the law is a preparation for Christ, and that it is temporal. But here the question is again put, Is the law so abolished that we have nothing to do with it? I answer, the law, so far as it is a rule of life, a bridle to keep us in the fear of the Lord, a spur to correct the sluggishness of our flesh, -- so far, in short, as it is "profitable for doctrine, for reproof, for correction, for instruction in righteousness, that believers may be instructed in every good work," (2-Timothy 3:16, 17,) -- is as much in force as ever, and remains untouched. In what respect, then, is it abolished? Paul, we have said, looks at the law as possessing certain qualities, and those qualities we shall enumerate. It annexes to works a reward and a punishment; that is, it promises life to those who keep it, and curses all transgressors. Meanwhile, it requires from man the highest perfection and most exact obedience. It makes no abatement, gives no pardon, but calls to a severe reckoning the smallest offenses. It does not openly exhibit Christ and his grace, but points him out at a distance, and only when hidden by the covering of ceremonies. All such qualities of the law, Paul tells us, are abolished; so that the office of Moses is now at an end, so far as it differs in outward aspect from a covenant of grace.
But after that faith is come - The scheme of salvation by faith. After that is revealed; see the note at Galatians 3:23.
We are no longer under a schoolmaster - Under the poedagogus, or pedagogue. We are not kept in restraint, and under bondage, and led along to another to receive instruction. We are directly under the great Teacher, the Instructor himself; and have a kind of freedom which we were not allowed before. The bondage and servitude have passed away; and we are free from the burdensome ceremonies and expensive rites (compare the note at Acts 15:10) of the Jewish law, and from the sense of condemnation which it imposes. This was true of the converts from Judaism to Christianity - that they became free from the burdensome rites of the Law and it is true of all converts to the faith of Christ, that, having been made to see their sin by the Law, and having been conducted by it to the cross of the Redeemer, they are now made free.
But, after that faith is come - When Christ was manifested in the flesh, and the Gospel was preached, we were no longer under the pedagogue; we came to Christ, learned of him, became wise unto salvation, had our fruit unto holiness, and the end eternal life.
It is worthy of remark that, as ὁ νομος, the Law, is used by St. Paul to signify, not only the law, properly so called, but the whole of the Mosaic economy, so ἡ πιστις, the Faith, is used by him to express, not merely the act of believing in Christ, but the whole of the Gospel.
But after that faith is come,.... That is, since Christ the object of faith is come in the flesh, and has fulfilled the law, and redeemed them that were under it from its bondage, curse, and condemnation:
we are no longer under a schoolmaster; under the law as such; as no longer under it as a military guard, nor in it as a prison, so neither under it as a schoolmaster; not needing its instructions, or its discipline; since Christ is come as a prophet to teach and instruct, as a priest to atone for sin, and make intercession for transgressors, and as a King to rule and govern; in whose hands, and not in the hands of Moses, the law now is, as a rule of walk and conversation.
"But now that faith is come," &c. Moses the lawgiver cannot bring us into the heavenly Canaan though he can bring us to the border of it. At that point he is superseded by Joshua, the type of Jesus, who leads the true Israel into their inheritance. The law leads us to Christ, and there its office ceases.
But faith - That is, the gospel dispensation. Being come, we are no longer under that schoolmaster - The Mosaic dispensation.
*More commentary available at chapter level.