9 Well then, should we conclude that we Jews are better than others? No, not at all, for we have already shown that all people, whether Jews or Gentiles, are under the power of sin. 10 As the Scriptures say, "No one is righteous- not even one. 11 No one is truly wise; no one is seeking God. 12 All have turned away; all have become useless. No one does good, not a single one." 13 "Their talk is foul, like the stench from an open grave. Their tongues are filled with lies." "Snake venom drips from their lips." 14 "Their mouths are full of cursing and bitterness." 15 "They rush to commit murder. 16 Destruction and misery always follow them. 17 They don't know where to find peace." 18 "They have no fear of God at all."
19 Obviously, the law applies to those to whom it was given, for its purpose is to keep people from having excuses, and to show that the entire world is guilty before God.
Matthew Henry's Commentary on Romans 3:9-19
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.
Commentary on Romans 3:19-20
(Read Romans 3:19-20)
It is in vain to seek for justification by the works of the law. All must plead guilty. Guilty before God, is a dreadful word; but no man can be justified by a law which condemns him for breaking it. The corruption in our nature, will for ever stop any justification by our own works.