Why do Christians believe in the total depravity of man?

Total depravity is a core doctrine in sovereign grace theology that asserts that sin has tainted every part of human nature—mind, will, emotions, and actions. This means that individuals are incapable of seeking God or choosing righteousness on their own. Scriptural support for this doctrine can be found in passages like Ephesians 2:1, which describes humanity as 'dead in trespasses and sins.' From a Reformed perspective, the belief in total depravity emphasizes the need for divine grace in the process of salvation, as only God can regenerate the heart and open spiritual eyes and ears. This understanding fosters humility among believers, acknowledging that salvation is solely the work of God, rather than any merit of their own.