New Revised Standard Version
What then are we to say? Should we continue in sin in order that grace may abound?

Contemporary English Version
What should we say? Should we keep on sinning, so that God's gift of undeserved grace will show up even better?

New American Bible
What then shall we say? Shall we persist in sin that grace may abound? Of course not!

Douay-Rheims Bible
What shall we say, then? Shall we continue in sin, that grace may abound?

What shall we say, then? Shall we continue in sin, that grace may abound?

What.

Romans 3:5 But if our injustice commend the justice of God, what shall we say? Is God unjust, who executeth wrath?

Shall.

Romans 6:15 What then? Shall we sin, because we are not under the law, but under grace? God forbid!

Romans 2:4 Or despisest thou the riches of his goodness and patience and longsuffering? Knowest thou not that the benignity of God leadeth thee to penance?

Romans 3:5-8,31 But if our injustice commend the justice of God, what shall we say? Is God unjust, who executeth wrath? . . .

Romans 5:20,21 Now the law entered in that sin might abound. And where sin abounded, grace did more abound. . . .

Galatians 5:13 For you, brethren, have been called unto liberty. Only make not liberty an occasion to the flesh: but by charity of the spirit serve one another.

1 Peter 2:16 As free and not as making liberty a cloak for malice, but as the servants of God.

2 Peter 2:18,19 For, speaking proud words of vanity, they allure by the desires of fleshly riotousness those who for a little while escape, such as converse in error: . . .

Jude 1:4 For certain men are secretly entered in (who were written of long ago unto this judgment), ungodly men, turning the grace of our Lord God into riotousness and denying the only sovereign Ruler and our Lord Jesus Christ.