Hebrews 10:29:

Of how much sorer punishment, suppose ye, shall he be thought worthy, who hath trodden under foot the Son of God, and hath counted the blood of the covenant, wherewith he was sanctified, an unholy thing, and hath done despite unto the Spirit of grace?

See also:

Common Misconceptions About the Holy Spirit Moving in a Church
Objection: We Don’t Have to Keep Getting Saved the Way We Have to Keep Getting Healed, So Healing Can’t Be in the Atonement