"Who can say, "I have made my heart clean, I am pure from my sin"? " - Proverbs 20 V9

"But if we walk in the light as He is in the light, we have fellowship with one another, and the blood of Jesus Christ His Son cleanses us from all sin." - 1 John 1 V7

Only the blood of the Lord Jesus Christ can cleanse away all our sins. By faith when we receive the Lord Jesus Christ as our Saviour, we are converted from sinners to righteous in Christ. Only the shed blood has the power to cleanse us from our sins. Without the shed blood of Jesus Christ there is no forgiveness of our sins.