What does the Bible say about the condition of man's heart?

Scripture teaches that the heart of man, in its natural condition, is corrupt and can do nothing good. Romans 3:10-12 declares that 'there is none righteous, no, not one: there is none that understandeth, there is none that seeketh after God.' This highlights the total depravity of mankind, indicating that apart from divine grace, we are incapable of turning to God or doing good. It emphasizes the necessity of God’s work within us to cleanse and renew our hearts, enabling us to seek Him and live righteously.