What does the Bible teach about repentance?

Repentance is a profound and necessary aspect of the Christian life that involves a change of mind and heart toward sin and God. As seen in Psalm 51, David illustrates genuine repentance when he acknowledges his transgressions before God and cries out for mercy. True repentance is not merely feeling sorry for sin but results in a heartfelt desire to turn away from it and seek God's forgiveness (1 John 1:9). This process reflects an understanding of God's holiness and our need for His grace, leading to restoration and renewed joy in our salvation.