The world and the devil may label you by your sin but your Heavenly Father does not. He sees you through the blood of Christ. God sees you as righteous.
He came in power against sin. Moreover, He came in the power of amazing grace so that we are not consumed by His rage against sin but made able to stand by the power of his grace and mercy.
When the Messiah comes He will not just "try" to redeem, He "will" redeem His people from their sins!
The birth of Jesus marks not the possibility of redeeming grace but the dawn of redeeming grace.