How do we know that mortification is important for Christians?

The necessity of mortification for Christians is anchored in the consequences outlined in Scripture. Romans 8:13 presents a clear condition: living according to the flesh results in death, while mortifying sinful deeds leads to life. This underscores that mortification is not a peripheral issue but central to the believer's walk. Moreover, mortification is essential for true holiness, as it involves the active engagement of believers in overcoming sin—an embodiment of living faith. Without this practice, Christians may struggle to attain the joy and peace promised in their faith.