Does a christian ever become "dead" to sin?

What does Romans 6:11, "dead indeed unto sin," mean.

To understand the meaning of this challenging phrase, carefully consider the immediate context. These verses indicate that what we are in Christ positionally, we must now live practically. "For in that He died, He died unto sin once: but in that He liveth, He liveth unto God" (Romans 6:10). Thus, we are judged as having died to sin, but as having now been made alive unto God in Christ Jesus.

This is sobering truth for the believer to contemplate, as the wider context of Romans 6 reveals. The believer who understands that God has made abundant provision in Christ for his daily living is enabled to live his life to the glory of Christ, and to the blessing and enrichment of his own soul. In this section of Scripture, the believer is viewed as being permanently set apart (sanctified) in Christ Jesus. This is displayed in his baptism, when he is identified with Christ in death and resurrection, having already been justified through grace. Since the believer is in this condition positionally, he must ever reckon (consider, calculate) practically that he is dead to sin, but alive to God. Obviously, there is no response to sin in a dead person! Therefore, a believer should have nothing to do with any form of sin in this sordid world; rather, he must live a life of holiness to God.

S. Wells