Hebrews 10:26
For if we wilfully persist in sin after having received the full knowledge of the truth, there no longer remains in reserve any other sacrifice for sins.
Matthew 12:32
And whoever shall speak against the Son of Man may obtain forgiveness; but whoever speaks against the Holy Spirit, neither in this nor in the coming age shall he obtain forgiveness."
Hebrews 10:29
How much severer punishment, think you, will he be held to deserve who has trampled under foot the Son of God, has not regarded as holy that Covenant-blood with which he was set free from sin, and has insulted the Spirit from whom comes grace?
2 Peter 2:10
and especially those who are abandoned to sensuality--craving, as they do, for polluted things, and scorning control. Fool-hardy and self-willed, they do not tremble when speaking evil of glorious beings;