"For God sent not his Son into the world to condemn the world, but that the world through him might be saved" (John 3:17)
There have been many backslidden Christians who have agonized over the possibility of having committed the unpardonable sin. I have discovered a very helpful rule in this matter. I believe it holds good throughout the whole Church of God around the world. Anyone who is concerned about having committed the unpardonable sin may be sure he or she has not!
Any person who has ever committed that dark and dread unpardonable sin fills no guilt and confesses no worry. Jesus dealt with the Pharisees but His warning caused them no worry. They still believed themselves to b entirely righteous! They felt no need for repentance, no sorrow for sin, no guilt for unbelief. "Do not worry about us," was their attitude. "We do not have any problem!"
Returning to our rule for Christians with guilt and concern, the very fact that a person is worried and concerned indicates that the Spirit of God is still working in his or her life.
God not only forgives great sins as readily as little ones, but once He has forgiven them He starts anew right there and never brings up the old sins again.
~A. W. Tozer~