But the law intervened, etc. This subject depends on what he had said before -- that there was sin before the law was published. This being the case, then follows immediately this question -- For what purpose was the law given? It was therefore necessary to solve this difficulty; but as a longer digression was not suitable, he deferred the subject and handled it in another place: and now by the way he only says, that the law entered, [1] that sin might abound; for he describes not here the whole office and use of the law, but only touches on one part, which served his present purpose. He indeed teaches us, that it was needful that men's ruin should be more fully discovered to them, in order that a passage might be opened for the favor of God. They were indeed shipwrecked before the law was given; as however they seemed to themselves to swim, while in their destruction, they were thrust down into the deep, that their deliverance might appear more evident, when they thence emerge beyond all human expectation. Nor was it unreasonable, that the law should be partly introduced for this end -- that it might again condemn men already condemned; for nothing is more reasonable than that men should, through all means be brought, nay, forced, by being proved guilty, to know their own evils. That offense might abound, etc. It is well known how some, following Augustine, usually explain this passage, -- that lust is irritated the more, while it is checked by the restraints of the law; for it is man's nature to strive for what is forbidden. But I understand no other increase to be intended here than that of knowledge and of obstinacy; for sin is set by the law before the eyes of man, that he may be continually forced to see that condemnation is prepared for him. Thus sin disturbs the conscience, which, when cast behind them, men forget. And farther, he who before only passed over the bounds of justice, becomes now, when the law is introduced, a despiser of God's authority, since the will of God is made known to him, which he now wantonly tramples under feet. It hence follows, that sin is increased by the law, since now the authority of the lawgiver is despised and his majesty degraded. [2] Grace has superabounded. After sin has held men sunk in ruin, grace then comes to their help: for he teaches us, that the abundance of grace becomes for this reason more illustrious. -- that while sin is overflowing, it pours itself forth so exuberantly, that it not only overcomes the flood of sin, but wholly absorbs it. [3] And we may hence learn, that our condemnation is not set before us in the law, that we may abide in it; but that having fully known our misery, we may be led to Christ, who is sent to be a physician to the sick, a deliverer to the captives, a comforter to the afflicted, a defender to the oppressed. (Isaiah 61:1.)

Footnotes

1 - "Intercessisse legem -- that the law came between," i.e., Adam and Christ; pareisolthen from para, with, besides, or between, and eiserchomai, to enter. It occurs elsewhere only in Galatians 2:4, where it is rendered, "came in privily," as required by the context. But it cannot be so rendered here. Schleusner says, that it simply means to enter, and that it is so used by Philo. It is thus rendered by the Syriac and Arabic versions. Erasmus has "obiter subiit, vel, irrepsit -- came, or, crept in by the by;" Hammond has the same; but Beza attaches the idea of besides to para, -- præterea introiit -- entered in besides," i.e., in addition to the disease under which all men labored, having been contaminated by that of the first sin. "Intervenit -- intervened," is the rendering of Grotius; that is, the law intervened between the beginning of sin and the beginning of new righteousness. "The law," says Hodge, "was superinduced on a plan already laid. It was not designed for the accomplishment of man's salvation, that is, either for his justification or sanctification, but for the accomplishment of a very subordinate part in the great scheme of mercy." -- Ed.

2 - Chrysostom regarded hina here as denoting not the final cause, but the event, and thought the meaning to be, that the law entered, so that the effect or event was, that sin increased. Its rendering would then be, so that: and this seems to be the meaning given to it by Calvin. The law did not create sin, but made it known, and by discovering it, increased its guilt when persisted in, and by discovering it showed the necessity of a Savior.

3 - The superabounding has a reference to the increasing of sin by means of the law. Grace not only abounded so as to be sufficient to remedy the first sin and the sins which followed it; but it abounded still more, so as to be an adequate provision for sin when increased by the law, through the perverseness of human nature. -- Ed.

Moreover - But. What is said in this verse and the following, seems designed to meet the Jew, who might pretend that the Law of Moses was intended to meet the evils of sin introduced by Adam, and therefore that the scheme defended by the apostle was unnecessary. He therefore shows them that the effect of the Law of Moses was to increase rather than to diminish the sins which had been introduced into the world. And if such was the fact, it could not be pled that it was adapted to overcome the acknowledged evils of the apostasy.
The law - The Mosaic laws and institutions. The word seems to be used here to denote all the laws which were given in the Old Testament.
Entered - This word usually means to enter secretly or surreptitiously. But it appears to be used here simply in the sense that the Law came in, or was given. It came in addition to, or it supervened the state before Moses, when people were living without a revelation.
That sin - The word "that" ἵνα hina in this place does not mean that it was the design of giving the Law that sin might abound or be increased, but that such was in fact the effect. It had this tendency, not to restrain or subdue sin, but to excite and increase it. That the word has this sense may be seen in the lexicons. The way in which the Law produces this effect is stated more fully by the apostle in Romans 7:7-11. The Law expresses the duty of man; it is spiritual and holy; it is opposed to the guilty passions and pleasures of the world; and it thus excites opposition, provokes to anger, and is the occasion by which sin is called into exercise, and shows itself in the heart. All law, where there is a disposition to do wrong, has this tendency. A command given to a child that is disposed to indulge his passions, only tends to excite anger and opposition. If the heart was holy, and there was a disposition to do right, law would have no such tendency. See this subject further illustrated in the notes at Romans 7:7-11.
The offence - The offence which had been introduced by Adam, that is, sin. Compare Romans 5:15.
Might abound - Might increase; that is, would be more apparent, more violent, more extensive. The introduction of the Mosaic Law, instead of diminishing the sins of people, only increases them.
But where sin abounded - Alike in all dispensations - before the Law, and under the Law. In all conditions of the human family before the gospel, it was the characteristic that sin was prevalent.
Grace - Favor; mercy.
Did much more abound - Superabounded. The word is used no where else in the New Testament, except in 2-Corinthians 7:4. It means that the pardoning mercy of the gospel greatly triumphed over sin, even over the sins of the Jews, though those sins were greatly aggravated by the light which they enjoyed under the advantages of divine revelation.

The law entered that (ἱνα) the offense might abound - After considering various opinions concerning the true meaning of this verse, (see under Romans 5:12 (note)), I am induced to prefer my own, as being the most simple. By law I understand the Mosaic law. By entering in, παρεισηλθεν, or, rather, coming in privily, see Galatians 2:4, (the only place where it occurs besides), I understand the temporary or limited use of that law, which was, as far as its rites and ceremonies are considered, confined to the Jewish people, and to them only till the Messiah should come; but considered as the moral law, or rule of conscience and life, it has in its spirit and power been slipped in - introduced into every conscience, that sin might abound - that the true nature, deformity, and extent of sin might appear; for by the law is the knowledge of sin: for how can the finer deviations from a straight line be ascertained, without the application of a known straight edge? Without this rule of right, sin can only be known in a sort of general way; the innumerable deviations from positive rectitude can only be known by the application of the righteous statutes of which the law is composed. And it was necessary that this law should be given, that the true nature of sin might be seen, and that men might be the better prepared to receive the Gospel; finding that this law worketh only wrath, i.e. denounces punishment, forasmuch as all have sinned. Now, it is wisely ordered of God, that wherever the Gospel goes there the law goes also; entering every where, that sin may be seen to abound, and that men may be led to despair of salvation in any other way or on any terms but those proposed in the Gospel of Christ. Thus the sinner becomes a true penitent, and is glad, seeing the curse of the law hanging over his soul, to flee for refuge to the hope set before him in the Gospel. On the meaning of ἱνα, in various places, see Chrysost. vol. iii. p. 241. See also Hammond on the word in his notes on the New Testament.
But where sin abounded - Whether in the world, or in the heart of the individual, being discovered by this most pure and righteous law, grace did much more abound: not only pardon for all that is past is offered by the Gospel, so that all the transgressions for which the soul is condemned to death by the law, are freely and fully forgiven; but also the Holy Spirit, in the abundance of his gifts and graces, is communicated, so as to prepare the receiver for an exceeding and eternal weight of glory. Thus the grace of the Gospel not only redeems from death, and restores to life, but brings the soul into such a relationship with God, and into such a participation of eternal glory, as we have no authority to believe ever would have been the portion even of Adam himself, had he even eternally retained his innocence. Thus, where sin abounded, grace doth much more abound.

(19) Moreover the law (a) entered, that the offence might abound. But where sin abounded, grace did much more (b) abound:
(19) A preventing of an objection: why then did the law of Moses then enter? So that men might be so much more the guilty, and the benefit of God in Christ Jesus be all the more glorious.
(a) In addition to that disease which all men were infected with by being defiled with one man's sin, the law entered.
(b) Grace was poured so plentifully from heaven that it did not only counterbalance sin, but beyond this it surpassed it.

Moreover, the law entered,.... By "the law" is meant, not the law of nature, much less the law of sin; rather the ceremonial law, which came in over and above the moral law; it entered but for a time; by which sin abounded, and appeared very sinful; and through it the grace of God much more abounded, in the sacrifice of Christ prefigured by it: but the moral law, as it came by Moses, is here intended; which entered with great pomp and solemnity on Mount Sinai; and intervened, or came between Adam's sin and Christ's sacrifice; and also came in besides, or over and above the promise of life by Christ; and may moreover be said to enter into the conscience of a sinner, with the power and energy of the Spirit of God: and the end of its entrance is,
that the offence might abound; meaning either the sin of Adam, he had been speaking of under that name, that that itself, and the imputation of it to his posterity, and also the pollution of human nature by it, together with all the aggravating circumstances of it, might appear more manifest; or sin in general, any and all actual transgressions, which abound through the law's discovering the evil nature of them, and so taking away all excuse, or pretext of ignorance: by prohibiting them, whereby the corrupt nature of man becomes more eager after them; and by accusing, threatening, terrifying, and condemning, on account of them: one view of the apostle in this, doubtless, is to show, that there can be no justification by the law:
but where sin abounded, grace did much more abound: sin has abounded in human nature, in all the individuals of it; and grace has superabounded in the same nature, being assumed by the Son of God, and united to him, who has appeared in it "full of grace and truth", John 1:14, sin has abounded in all the powers and faculties of the soul, in the understanding, will, and affections, of an unregenerate man; but in regeneration, the grace of God much more abounds in the same powers and faculties, enlightening the understanding, subduing the will, and influencing the affections with love to divine things: sin abounded in the Gentile world, before the preaching of the Gospel in it; but afterwards grace did superabound in the conversion of multitudes in it from idols, to serve the living God; and where sin has abounded in particular persons to a very great height, grace has exceeded it, as in Manasseh, Mary Magdalene, Saul, and others.

By Christ and his righteousness, we have more and greater privileges than we lost by the offence of Adam. The moral law showed that many thoughts, tempers, words, and actions, were sinful, thus transgressions were multiplied. Not making sin to abound the more, but discovering the sinfulness of it, even as the letting in a clearer light into a room, discovers the dust and filth which were there before, but were not seen. The sin of Adam, and the effect of corruption in us, are the abounding of that offence which appeared on the entrance of the law. And the terrors of the law make gospel comforts the more sweet. Thus God the Holy Spirit has, by the blessed apostle, delivered to us a most important truth, full of consolation, suited to our need as sinners. Whatever one may have above another, every man is a sinner against God, stands condemned by the law, and needs pardon. A righteousness that is to justify cannot be made up of a mixture of sin and holiness. There can be no title to an eternal reward without a pure and spotless righteousness: let us look for it, even to the righteousness of Christ.

Moreover the law--"The law, however." The Jew might say, If the whole purposes of God towards men center in Adam and Christ, where does "the law" come in, and what was the use of it? Answer: It
entered--But the word expresses an important idea besides "entering." It signifies, "entered incidentally," or "parenthetically." (In Galatians 2:4 the same word is rendered, "came in privily.") The meaning is, that the promulgation of the law at Sinai was no primary or essential feature of the divine plan, but it was "added" (Galatians 3:19) for a subordinate purpose--the more fully to reveal the evil occasioned by Adam, and the need and glory of the remedy by Christ.
that the offence might abound--or, "be multiplied." But what offense? Throughout all this section "the offense" (four times repeated besides here) has one definite meaning, namely, "the one first offense of Adam"; and this, in our judgment, is its meaning here also: "All our multitudinous breaches of the law are nothing but that one first offense, lodged mysteriously in the bosom of every child of Adam as an offending principal, and multiplying itself into myriads of particular offenses in the life of each." What was one act of disobedience in the head has been converted into a vital and virulent principle of disobedience in all the members of the human family, whose every act of wilful rebellion proclaims itself the child of the original transgression.
But where sin abounded--or, "was multiplied."
grace did much more abound--rather, "did exceedingly abound," or "superabound." The comparison here is between the multiplication of one offense into countless transgressions, and such an overflow of grace as more than meets that appalling case.

Moreover law entered. Not the law, but law. The reference is not only to the law of Moses, but to all divine law, the law written on the hearts of the Gentiles. The effect of its entrance was that offences abounded. Law was continually broken. The reference here is not to Adam's sin, but to the personal sins of each man.
Grace did much more abound. The grace of the gospel offers a free pardon to all who have broken law if they will come to God through Christ.
That as sin hath reigned. Hence, with this gracious gospel of mercy for every penitent believer, even as sin once reigned and caused universal death, so might grace reign. All might accept the gospel, and enjoy the divine favor, and thus secure eternal life through Jesus Christ. The scope of God's plan of salvation is wide enough for all. If there are those who are unsaved, it is because they will not come to Christ that they might have life.

The law came in between - The offence and the free gift. That the offence might abound - That is, the consequence (not the design) of the law's coming in was, not the taking away of sin, but the increase of it. Yet where sin abounded, grace did much more abound - Not only in the remission of that sin which Adam brought on us, but of all our own; not only in remission of sins, but infusion of holiness; not only in deliverance from death, but admission to everlasting life, a far more noble and excellent life than that which we lost by Adam's fall.