What does the Bible say about man's inability to save himself?

Scripture emphasizes man's inability to redeem himself, particularly in Romans 3:20, which states that 'by the deeds of the law shall no flesh be justified in his sight.' This inability is rooted in the fall of Adam, which left humanity spiritually dead and blind to the things of God. The natural man, according to 1 Corinthians 2, cannot receive the things of the Spirit of God, as they are foolishness to him. Thus, any notion that we can save ourselves through our efforts is fundamentally flawed, as it contradicts biblical teaching about human depravity and the need for divine aid.