Commentaries:
The apostle clearly shows that a Christian is to live a certain kind of life—a godly one, of course—in the teeth of the attacks of human nature, sin, the world, and Satan. The very reason we are to obey is because of God's grace. Why? Because of the grace of God, a person can, for the first time in his life, make the right choices. That is what obligates us. Before that, he was the servant of sin, in bondage to Satan, but now he is free.
John W. Ritenbaugh
Grace Upon Grace
What does it mean to be "under the law"? The apostle Paul says that we are "not under law but under grace" (Romans 6:14). "Sin is the transgression of the law" (I John 3:4, KJV), and every human being who has ever lived—except Jesus Christ—has sinned (Romans 3:23). Once the knowledge of the law comes, there is no excuse, and the law condemns all who break it to eternal death. Paul personifies the law as the instrument that points the finger of condemnation at each of us: "I was alive once without the law, but when the commandment came, sin revived and I died" (Romans 7:9). Therefore, to be "under the law" means to be "under the condemnation of the law."
The phrase "under the law" is also used in Romans 3:19; I Corinthians 9:20-21; Galatians 3:23; 4:4-5; 4:21; 4:18.
Earl L. Henn
Was Jesus Christ Born Under the Law?
Obedience is submission. In the context of this verse, if one serves sin, then he is sin's slave. Sin is the master. This does not mean making an occasional mistake, falling short of the mark, or wandering from the way. Paul is referring to sin that is dominating the life, that is lived in as a way of life. If a person is in that position, the master—sin—has jurisdiction over his skill, energy, and time.
John W. Ritenbaugh
Passover and I Corinthians 10
Is that not strong, plain language? "Certainly not" is translated as "God forbid," "perish the thought," or "may it never be," in other Bibles. In his epistles, Paul uses this exclamatory expression in relation to sin sixty times! Yet, this world's Christianity has succeeded in communicating to it adherents one of the most devastating of all false doctrines—that the works of keeping God's commandments are not required! They insidiously twist the truth that, though works most assuredly cannot save a person, stopping sin in one's life is absolutely required to provide evidence that one is indeed a Christian, to bring glory to God, and to grow. Jesus Christ died to provide forgiveness of sin. Therefore, if a person persists in sin following his forgiveness, he is trampling "the blood of the covenant by which he was sanctified [as] a common thing, and insult[ing] the Spirit of grace" (Hebrews 10:29).
John W. Ritenbaugh
Communication and Leaving Babylon (Part Three)
To receive salvation, a Christian must now live a life of obedience to the law of God. Those who claim that they know Christ and still continue in a life of breaking God's commandments are liars.
Earl L. Henn
Basic Doctrines: Salvation
Other Forerunner Commentary entries containing Romans 6:15:
Romans 7:19-23
Romans 9:19-24
Galatians 4:7
Revelation 2:14-15