The greatest calling a person can have is to be a disciple of Jesus. Jesus Himself has called us to follow Him on this way that leads to more abundant and eternal life.
The scriptures are not ambiguous concerning victory over sin. A victorious life is fully possible, and living in sin is completely unnecessary. No one needs to be a slave to sin.
One of the core teachings in the Christian gospel, this message is the crucial, most powerful key to coming to spiritual growth so that the life of Christ can be manifested in us.