… Whatever the sin, if the soul repents and believes, the guilt is washed away in the blood of Christ; but he who rejects the work of the Holy Spirit is placing himself where repentance and faith cannot come to him. It is by the Spirit that God works upon the heart; when men willfully reject the Spirit, and declare It to be from Satan, they cut off the channel by which God can communicate with them. When the Spirit is finally rejected, there is no more that God can do for the soul.
– The Desire of Ages, pg. 321