You have become estranged from Christ, you who attempt to be justified by law; you have fallen from grace.
To fall from grace is not to sin so much that God refuses to forgive us. To fall from grace is to move back to a place where somehow we believe we can justify our own sinful self before our Father through good works. It is to effectively reject the sacrifice of Christ for our sins and begin to believe that through our own performance we can assure our own salvation. That somehow we can be accepted through what we do rather than vicariously through what Christ Jesus has done on our behalf.
Surely when we pursue such an approach we simply do not realize the depth and darkness of sin. Sin in all of its evil ugliness could only be addressed by the death of the son of God on the cross. Nothing is more serious than sin for its implications are eternal. How dare we think we can atone for sin through our own pitiful good works. Our righteousness is weak and earthly – like filthy rags. Christ’s redemption is strong and heavenly. We are saved by God’s grace alone.