Muslims believe that all humans are born pure and that they can achieve righteousness through their own efforts and God's mercy.

The Bible explicitly states that there is no human being who does not sin, as seen in verses like 1 Kings 8:46 and Ecclesiastes 7:20. This doctrine of original sin indicates that every person is born with a sinful nature, which affects their ability to be righteous before God. Genesis 6:5 and Jeremiah 17:9 further emphasize the inherent wickedness of the human heart, asserting that it is deceitful and corrupt. Therefore, while Muslims may believe in the potential for human purity, the Christian perspective is that true purity and righteousness can only come through the grace of God, as articulated in Psalm 130:3-4. The Quran acknowledges human sinfulness as well, indicating that Allah's mercy is essential for purification, aligning with the Christian understanding of the necessity of divine grace for salvation.