Why is understanding man's sinfulness important for Christians?

Understanding the depth of human sinfulness is critical for Christians, as it reveals the serious nature of our spiritual condition and the necessity of grace for salvation. According to Ephesians 2:1-3, before coming to faith in Christ, individuals are dead in their trespasses and sins, demonstrating the urgency for the gospel. Grasping this truth fosters humility, gratitude, and a deeper appreciation for the redemptive work of Jesus Christ, who reconciled us to God despite our fallen state (Romans 5:10).