Romans 6:15

What then? shall we sin because we are not under law but under grace? let it not be!

Romans 6:1-2

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

Romans 3:9

What, then? are we better? not at all! for we did before charge both Jews and Greeks with being all under sin,

1 Corinthians 9:20-21

and I became to the Jews as a Jew, that Jews I might gain; to those under law as under law, that those under law I might gain;

2 Corinthians 7:1

Having, then, these promises, beloved, may we cleanse ourselves from every pollution of flesh and spirit, perfecting sanctification in the fear of God;

Galatians 2:17-18

And if, seeking to be declared righteous in Christ, we ourselves also were found sinners, is then Christ a ministrant of sin? let it not be!

Ephesians 2:8-10

for by grace ye are having been saved, through faith, and this not of you -- of God the gift,

Titus 2:11-14

For the saving grace of God was manifested to all men,

Jude 1:4

for there did come in unobserved certain men, long ago having been written beforehand to this judgment, impious, the grace of our God perverting to lasciviousness, and our only Master, God, and Lord -- Jesus Christ -- denying,

Treasury of Scripture Knowledge

Summary

What then? shall we sin, because we are not under the law, but under grace? God forbid.

Bible References

Shall we

Romans 6:1
What, then, shall we say? shall we continue in the sin that the grace may abound?
1 Corinthians 9:20
and I became to the Jews as a Jew, that Jews I might gain; to those under law as under law, that those under law I might gain;
2 Corinthians 7:1
Having, then, these promises, beloved, may we cleanse ourselves from every pollution of flesh and spirit, perfecting sanctification in the fear of God;
Galatians 2:17
And if, seeking to be declared righteous in Christ, we ourselves also were found sinners, is then Christ a ministrant of sin? let it not be!
Ephesians 2:8
for by grace ye are having been saved, through faith, and this not of you -- of God the gift,
Titus 2:11
For the saving grace of God was manifested to all men,
Jude 1:4
for there did come in unobserved certain men, long ago having been written beforehand to this judgment, impious, the grace of our God perverting to lasciviousness, and our only Master, God, and Lord -- Jesus Christ -- denying,