31 How then is the Jew better off? or what profit is there in circumcision? 2 Much in every way: first of all because the words of God were given to them. 3 And if some have no faith, will that make the faith of God without effect? 4 In no way: but let God be true, though every man is seen to be untrue; as it is said in the Writings, That your words may be seen to be true, and you may be seen to be right when you are judged. 5 But if the righteousness of God is supported by our wrongdoing what is to be said? is it wrong for God to be angry (as men may say)? 6 In no way: because if it is so, how is God able to be the judge of all the world? 7 But if, because I am untrue, God being seen to be true gets more glory, why am I to be judged as a sinner? 8 Let us not do evil so that good may come (a statement which we are falsely said by some to have made), because such behaviour will have its right punishment.
9 What then? are we worse off than they? In no way: because we have before made it clear that Jews as well as Greeks are all under the power of sin;
Matthew Henry's Commentary on Romans 3:1-9
Commentary on Romans 3:1-8
(Read Romans 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.
Commentary on Romans 3:9-18
(Read Romans 3:9-18)
Here again is shown that all mankind are under the guilt of sin, as a burden; and under the government and dominion of sin, as enslaved to it, to work wickedness. This is made plain by several passages of Scripture from the Old Testament, which describe the corrupt and depraved state of all men, till grace restrain or change them. Great as our advantages are, these texts describe multitudes who call themselves Christians. Their principles and conduct prove that there is no fear of God before their eyes. And where no fear of God is, no good is to be looked for.