What does repentance mean for a Christian?

In Christian doctrine, true repentance is more than mere regret; it involves a change of mind and heart toward God, recognizing one’s guilt and need for His mercy. It is a critical part of the salvation experience, as highlighted in Acts 20:21, calling for repentance toward God and faith in Jesus Christ. By repenting, a Christian acknowledges God’s holiness and their sinful state, thereby embracing the grace offered through Christ’s atoning work. This transformative process results in a new way of living, characterized by a continual turning away from sin and towards Christ's righteousness, showing that genuine faith is intimately linked with true repentance.