(18) But Christ is not a minister of sin. The thought is not to be tolerated. For, on the contrary, the sin is seen, not in leaving the Law for Christ, but in going back from Christ to the Law. The sin is seen doubly: for on one theory--the theory that the Law is valid--it was wrong to give it up; while on the other theory, that Christianity has taken its place, it is still more wrong to restore the fabric that has once been broken down.

For.--The connection is with the words immediately preceding: "God forbid that Christ should be the minister of sin." The idea is absurd as well as profane. For, instead of the Pauline Christian (who follows Christianity to its logical results) being the sinner, it is really the Judaising Christian who stands self-condemned--i.e., in returning to what he has forsaken.

If I build again.--The first person is used out of delicate consideration for his opponents. The Apostle is going to put a supposed case, which really represents what they were doing; but in order to soften the directness of the reference he takes it, as it were, upon himself.

St. Paul is fond of metaphors taken from building. Comp. Romans 15:20 (building upon another man's foundation), 1Corinthians 3:10-14 (Christ the foundation), Ephesians 2:20-22 (the Church built on the foundation of Apostles and prophets), and the words "edify" and "edification" wherever they occur. The idea of "pulling down" or "destroying" is also frequently met with. So in Romans 14:20 ("for meat destroy not the work of God," the same word as here used, in opposition to "edify," immediately before); 2Corinthians 5:1 ("if our earthly house of this tabernacle were dissolved"--pulled down or destroyed); 2Corinthians 10:4 ("mighty to the pulling down of strongholds")--a different word in the Greek, but similar in meaning.

We may compare with the whole verse the well-known saying, "Burn what you have adored, and adore what you have burned."

The things which I destroyed--i.e., the Mosaic law, the binding obligation of which had been done away in Christ.

Make myself.--Show, or prove myself to be: the same word as that translated "commend" in Romans 3:5; Romans 5:8.

A transgressor.--Hitherto the Apostle had kept up a sort of studied ambiguity in his use of the words "sin," "sinner." The Jews called the Gentiles "sinners," simply from the fact of their being Gentiles. The Pauline Christian placed himself on the same footing with the Gentiles, so far as the Law was concerned, and therefore he, too, in the same phraseology, was a sinner. But now the Apostle uses a word that could not be mistaken. A sinner the Christian might be, in the Judaising sense of the word, but the Judaiser himself was the real sinner: it was he who offended against the immutable principles of right and wrong.

Verse 18. - For if I build again the things which I destroyed (εἰ γὰρ α} κατέλυσα ταῦτα πάλιν οἰκοδομῶ); for if I am building up again the things which I pulled down. I make myself a transgressor (παραβάτην ἐμαυτὸν συνίστημι [or, συνιστάνω another form of the same verb]); a transgressor is what I am showing my own self to be. I must be wrong one way or the other; if I am right now, was wrong then; and from the very nature of the case now in hand, wrong exceedingly; no less than an absolute transgressor. This word "transgressor" denotes, not one who merely happens to break, perchance inadverdently, some precept of the Law, but one who, perhaps in consequence of even one act of wilful transgression, is to be regarded as trampling upon the authority of the Law altogether (comp. Romans 2:25, 27; James 2:9, 11, which are the only places of the New Testament in which the word occurs; it is therefore a full equivalent to the word "sinner" of ver. 17). The Greek verb συνιστάνω, "to put forward in a clear light," is used similarly in 2 Corinthians 6:4; 2 Corinthians 7:11. It is much debated, and is certainly nowise clear, how far down in the chapter the rebuke addressed to St. Peter extends. If it does not reach to the end of the chapter, as some think it does, the break may be very well placed at the end of this verse. For this verse clearly relates to St. Peter, whether actually addressed to him or not; notwithstanding that the verbs are in the hypothetical first person singular, they cannot be taken as referred to St. Paul, not being at all applicable to his case. On the other hand, with the nineteenth verse the first person is plainly used by St. Paul with reference to his own self, which is indeed marked by the emphatic ἐγὼ with which it opens.

2:15-19 Paul, having thus shown he was not inferior to any apostle, not to Peter himself, speaks of the great foundation doctrine of the gospel. For what did we believe in Christ? Was it not that we might be justified by the faith of Christ? If so, is it not foolish to go back to the law, and to expect to be justified by the merit of moral works, or sacrifices, or ceremonies? The occasion of this declaration doubtless arose from the ceremonial law; but the argument is quite as strong against all dependence upon the works of the moral law, as respects justification. To give the greater weight to this, it is added, But if, while we seek to be justified by Christ, we ourselves also are found sinners, is Christ the minister of sin? This would be very dishonourable to Christ, and also very hurtful to them. By considering the law itself, he saw that justification was not to be expected by the works of it, and that there was now no further need of the sacrifices and cleansings of it, since they were done away in Christ, by his offering up himself a sacrifice for us. He did not hope or fear any thing from it; any more than a dead man from enemies. But the effect was not a careless, lawless life. It was necessary, that he might live to God, and be devoted to him through the motives and grace of the gospel. It is no new prejudice, though a most unjust one, that the doctrine of justification by faith alone, tends to encourage people in sin. Not so, for to take occasion from free grace, or the doctrine of it, to live in sin, is to try to make Christ the minister of sin, at any thought of which all Christian hearts would shudder.For if I build again the things which I destroyed,.... Which must be understood not of good things, for formerly he destroyed the faith of the Gospel, at least as much as in him lay, and now he built it up, established, and defended it; in doing which he did no evil, or made himself a transgressor, but the reverse; he showed himself a faithful minister of Christ: but of things not lawful, such as the rites and ceremonies of the law of Moses, which were now abrogated, and he had declared to be so all over the Gentile world; and therefore should he go about to establish these things as necessary to salvation, or teach men to join the observance of them with Christ's righteousness for justification, then, says he,

I make myself a transgressor: for he could not be otherwise, be the case how it would with respect to the abrogation, or non-abrogation of the law; for if the law was not abolished, then he made himself a transgressor of it; by neglecting it himself, and teaching others to do so; and if it was abolished, then it must be criminal in him to enforce the observance of it as necessary to a sinner's justification before God. Now though the apostle transfers this to himself, and spoke in his own person to decline all invidious reflections and characters; yet he tacitly regards Peter, and his conduct, who had been taught by the vision the abrogation of the ceremonial law, and acted accordingly by conversing and eating with the Gentiles, and had declared that law to be an insupportable yoke of bondage, which the Gentiles were not obliged to come under; and yet now, by his practice and example, built up and established those very things he had before destroyed, and therefore could not exculpate himself, from being a transgressor: or these things may regard sins and immoralities in life and conversation; and the apostle's sense be, that should he, or any other, take encouragement to sin from the doctrine of free justification by the righteousness of Christ, as if he was the author and minister of sin, and allowed persons in it; this would be to establish sin, which the righteousness of Christ justifies from, and engage in a living in sin, to which, by Christ's righteousness, they are dead unto; than which, nothing can be, a greater contradiction, and which must unavoidably make them not only transgressors of the law, by sinning against it, but apostates, as the word here used signifies, from the Gospel; such must act quite contrary to the nature, use, and design of the Gospel in general, and this doctrine in particular, which teaches men to deny ungodliness and worldly lusts, and that being dead to sin, they should live unto righteousness.