The essence of our salvation is found in this phrase: Simul justus et pecator.

"The redeemed of God who are snatched from the flames by the hand of the Lord are still covered with ashes. We remain streaked with charcoal and blemished with soot. We are redeemed, but not sinless. Satan is quick to call attention to the dirt. He wants us to be more conscious of our sin than of God’s mercy."

R.C. Sproul