How do we know the importance of mortification of sin?

The biblical doctrine of mortification, the act of putting sin to death, is crucial for every believer. Remaining aware of sin's active presence in our lives is foundational to true sanctification. As seen in Romans 8:13, believers are instructed to 'mortify the deeds of the body' in order to live a life pleasing to God. This ongoing battle against sin requires vigilance and effort; perfect sinlessness is unattainable in this life. The reality of indwelling sin means that believers must continually confront and mortify their sinful inclinations through reliance on the Spirit. Thus, recognizing and engaging in the process of mortification is fundamental in the pursuit of holiness and spiritual growth.