For he hath made him to be sin for us, who knew no sin;
that we might be made the righteousness of God in him.
2 Corinthians 5:21
How easy it is, even for those of us who believe in salvation by grace, to look at our own works and secretly hope they will bring us into a better standing with God. Not all the Bible reading, prayer, and evangelizing in the world can change it. Christ became sin for us sinners, that we might be made righteous. Our works, no matter how great they seem, do not amount to anything in comparison.