In this Sunday School lesson, Jon Norton continues the "Members of One Another" series with a biblical study of repentance and its essential role in the life of the church. Drawing from Matthew 18, Psalm 51, 2 Corinthians 7, Proverbs 28, and Acts 26, Jon explains that repentance is not merely the beginning of the Christian life—it is an ongoing gift of God that restores fellowship, protects church unity, and produces genuine spiritual growth. This lesson examines the difference between worldly sorrow and godly repentance, the importance of confronting sin with humility and love, and the visible fruit that accompanies a truly repentant heart. Believers are encouraged to confess quickly, forgive freely, pursue reconciliation, and continually return to the mercy found in Jesus Christ.