Why is repentance important in the Christian faith?

Repentance is a critical aspect of the Christian faith because it signifies a transformation of the heart and mind toward sin and grace. In 2 Peter 3:9, it is stated that the Lord is "not willing that any should perish, but that all should come to repentance." This highlights that God desires His people to turn away from the sin that leads to destruction and to return to Him for mercy and salvation. Repentance is not merely an external act, but an internal change where one recognizes their sinful state and the need for Christ’s redemptive work. It is through repentance that believers are empowered by the Holy Spirit to live in accordance with God’s will, reflecting their new nature in Christ.