Audio commentary on this verse

Note 1 at Ro 6:1: Paul had stated God's grace (see note 5 at Ac 20:24 and note 5 at Ro 1:5) in such a way that it was inevitable that someone would ask, "Can we just keep on sinning, since we are saved by grace?" Of course, that is not what Paul was saying at all. He had already answered this argument before (Ro 3:8), and he did it again in Ro 6:15, making a total of three times in this epistle he had to overcome misunderstandings about his grace teaching encouraging sin.

Paul spoke this revelation of God's grace under the inspiration of the Holy Ghost with perfect balance, yet he was still misunderstood. Therefore, those who are teaching grace but do not encounter the same arguments causing them to explain that they are not advocating a life of sin have not preached grace the way that Paul did. If, in their efforts to prevent misuse, they present grace in such a way that no one ever accuses them of giving people a license to sin, then they haven't presented grace correctly.