What does the Bible say about our nature being evil?

Scripture clearly states that humanity is inherently evil due to the Fall. In Romans 3:23, it says, 'For all have sinned and come short of the glory of God.' This emphasizes that every person is born with a sinful nature, which means we are predisposed to rebellion against God. The nature of sin is malignant, which is depicted as a disease that corrupts the heart, leading us away from holiness and toward wickedness. Additionally, Jeremiah 17:9 states, 'The heart is deceitful above all things, and desperately wicked; who can know it?' This underscores our need for God's grace to transform our hearts from evil to good.