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

It is the sophistry of Satan that the death of Christ brought in grace to take the place of the law. The death of Jesus did not change or annul, or lessen in the slightest degree, the law of ten commandments. That precious grace offered to men through a Saviour's blood, establishes the law of God. Since the fall of man, God's moral government and His grace are inseparable. They go hand in hand through all dispensations. The gospel of the New Testament is not the Old Testament standard lowered to meet the sinner and save him in his sins. God requires of all His subjects obedience, entire obedience to all His commandments. AG 144.3