What does the Bible say about the righteousness of man?

According to Scripture, specifically Romans 3:10, 'There is none righteous, no, not one.' Humanity cannot claim inherent righteousness, as we are born sinners. However, God has provided a way for those whom He has chosen. Through faith in Christ, they are declared righteous. 2 Corinthians 5:21 clarifies this truth: 'For our sake, he made him to be sin who knew no sin, so that in him we might become the righteousness of God.' The righteousness believers possess is rooted in the work of Christ and not in their own efforts.