Why is understanding man's inability to save himself important for Christians?

Understanding mankind's inability to affect his own salvation is pivotal in Reformed theology. This is expressed well in Matthew 8, where the leper, fully aware of his unclean state, seeks healing not based on his merit but solely on the will of Jesus. The teaching of TULIP, particularly Total Depravity, emphasizes that humans, due to sin, are unable to come to God on their own. Thus, it is essential for Christians to see that salvation is an act of grace from start to finish, as articulated in Ephesians 2:8-9, which states that we are saved by grace through faith, and that not of ourselves; it is the gift of God. This acknowledgment fosters humility and gratitude, directing believers to rely completely on God's mercy.