How do we know the total depravity of man is true?

Psalm 58:3 states, 'The wicked are estranged from the womb,' highlighting that our sinful nature is innate and affects all people from birth. This doctrine of total depravity teaches that all humans are inherently sinful and unable to attain righteousness on their own. Romans 3:10-12 furthers this understanding, indicating that none are righteous, no not one, and all have turned aside. Therefore, our sinful acts are a manifestation of our sinful nature, confirming the reality of total depravity.