1 ¶ What advantage then has the Jew? or what profit is there in circumcision?

2 Much every way: chiefly, because the words of God were entrusted to them.

3 For what if some did not believe? will their unbelief nullify the faithfulness of God?

4 Absolutely not: on the contrary, let God be true, but every man a liar; as it is written, That you might be justified in your sayings, and might overcome when you are judged.

5 But if our unrighteousness commends the righteousness of God, what shall we say? Is God unjust to take vengeance? (I speak as a man)

6 Absolutely not: otherwise how could God judge the world?

7 For if the truth of God has abounded through my lie to his glory; why am I still judged as a sinner?

8 And why not say, (as some slanderously claim that we say,) Let us do evil, that good may come? whose damnation is just.

9 What then? are we better than they? No, not at all: for we have already proved that all men, both Jews and Gentiles, are all under sin;

10 As it is written, There is none righteous, no, not one:

11 There is no one who understands, there is no one who seeks after God.

12 They are all gone out of the way, they are together become unprofitable; there is no one who does good, no, not one.

13 Their throat is an open sepulchre; with their tongues they have used deceit; the poison of asps is under their lips:

14 Whose mouth is full of cursing and bitterness:

15 Their feet are swift to shed blood:

16 Destruction and misery are in their ways:

17 And the way of peace have they not known:

18 There is no fear of God before their eyes.

19 ¶ Now we know that whatever the law says, it says to those who are under the law: that every mouth may be stopped, and all the world may become guilty before God.

20 Therefore no flesh will ever be justified in God’s sight by the deeds of the law: because the knowledge of sin comes by the law.

21 But now the righteousness of God apart from the law is revealed, being witnessed by the law and the prophets;

22 Even the righteousness of God which comes through faith in Jesus Christ to all and upon all who believe: for there is no difference:

23 For all have sinned, and come short of the glory of God;

24 Being justified freely by his grace through the redemption that is in Christ Jesus:

25 Whom God has set forth to be a propitiation through faith in his blood, to declare his righteousness for the remission of sins that are past, through the forbearance of God;

26 To declare, I say, at this time his righteousness: that he might be just, and the justifier of him who has faith in Jesus.

27 Where is boasting then? It is excluded. By what law? of works? No: but by the law of faith.

28 Therefore we conclude that a man is justified by faith without the deeds of the law.

29 Is he only the God of the Jews? is he not also the God of the Gentiles? Yes, of the Gentiles also:

30 Seeing it is one God, who will justify the circumcised by faith, and uncircumcised through faith.

31 Do we then cancel the law through faith? Absolutely not: On the contrary, we establish the law.

[Note: Faith "without the deeds of the law" is faith alone (verse 28).]
[Note: Verses 18-24 explain the proper relationship of law and Gospel.]