3:1-8 The law could not save in or from sins, yet it gave the Jews advantages for obtaining salvation. Their stated ordinances, education in the knowledge of the true God and his service, and many favours shown to the children of Abraham, all were means of grace, and doubtless were made useful to the conversion of many. But especially the Scriptures were committed to them. Enjoyment of God's word and ordinances, is the chief happiness of a people. But God's promises are made only to believers; therefore the unbelief of some, or of many professors, cannot make this faithfulness of no effect. He will fulfil his promises to his people, and bring his threatened vengeance upon unbelievers. God's judging the world, should for ever silence all doubtings and reflections upon his justice. The wickedness and obstinate unbelief of the Jews, proved man's need of the righteousness of God by faith, and also his justice in punishing for sin. Let us do evil, that good may come, is oftener in the heart than in the mouth of sinners; for few thus justify themselves in their wicked ways. The believer knows that duty belongs to him, and events to God; and that he must not commit any sin, or speak one falsehood, upon the hope, or even assurance, that God may thereby glorify himself. If any speak and act thus, their condemnation is just.
7, 8. For if the truth of God, &c.—A further illustration of the same sentiment: that is, "Such reasoning amounts to this—which indeed we who preach salvation by free grace are slanderously accused of teaching—that the more evil we do, the more glory will redound to God; a damnable principle." (Thus the apostle, instead of refuting this principle, thinks it enough to hold it up to execration, as one that shocks the moral sense).
On this brief section, Note (1) Mark the place here assigned to the Scriptures. In answer to the question, "What advantage hath the Jew?" or, "What profit is there of circumcision?" (Ro 3:1) those holding Romish views would undoubtedly have laid the stress upon the priesthood, as the glory of the Jewish economy. But in the apostle's esteem, "the oracles of God" were the jewel of the ancient Church (Ro 3:1, 2). (2) God's eternal purposes and man's free agency, as also the doctrine of salvation by grace and the unchanging obligations of God's law, have ever been subjected to the charge of inconsistency by those who will bow to no truth which their own reason cannot fathom. But amidst all the clouds and darkness which in this present state envelop the divine administration and many of the truths of the Bible, such broad and deep principles as are here laid down, and which shine in their own luster, will be found the sheet-anchor of our faith. "Let God be true, and every man a liar" (Ro 3:4); and as many advocates of salvation by grace as say, "Let us do evil that good may come," "their damnation is just" (Ro 3:8).