God forbid. How shall we, that are dead to sin, live any longer therein?
Note 2 at Ro 6:2: Paul had so convincingly proven salvation by grace that no theological argument against it was left. Yet the most common complaint against grace is not theological; it concerns the practical application. Most people who can't handle grace think, "If I'm saved by grace, then why resist sin?" Paul answered this question in two ways in this chapter. First, we as Christians don't live lives of sin because we are dead to sin (see note 3 at this verse). This was the point Paul was making in Ro 6:1-14. Second, although God is not imputing our sins unto us, Satan is. Beginning with Ro 6:15, Paul clearly stated that sin is an inroad of the enemy into our lives (see note 3 at Ro 5:14).
Therefore, Paul stated that sin is still deadly and something to be resisted, but he changed the motivation for living holy. No longer do we resist sin to try to be accepted by God, but we live holy lives because our nature has been changed and because actions of sin give place to the devil.
Note 3 at Ro 6:2: What does it mean that we are dead to sin? From the context and also from personal experience, we can easily see what it doesn't mean. It clearly doesn't mean that we as Christians are incapable of committing sins.
Once again, the Greek word translated "sin" here is "HAMARTIA," a noun describing the propensity for sin, or what many call the sin nature (see note 9 at Ro 5:21). The New International Version translation calls this the old self. Our "old selves" were the driving force behind our acts of sin. Paul was saying that since our old selves that loved to sin are dead, it is not the nature of us Christians to commit acts of sin as it was before we were born again (see note 2 at Joh 3:3). That's the number one reason that we don't sin. We don't want to sin.
However, by Paul saying that the part of us that compelled us to sin is dead, new questions are raised. If we no longer have a sin nature that compels us to sin, then why do we do it? Some Christians believe they are still driven to sin and quote Paul's statements in Ro 7 to justify this. Paul went on to answer this question in Ro 6:6 (see note 7 at that verse).