Mark 3:29

But whoever reviles the holy Spirit can never be forgiven, but is guilty of an unending sin."

Matthew 25:46

Then they will go away to everlasting punishment, and the upright to everlasting life."

Luke 12:10

And anyone who speaks against the Son of Man will be forgiven for it, but no one who reviles the holy Spirit will be forgiven.

Matthew 12:31-32

Therefore, I tell you, men will be forgiven for any sin or abusive speech, but abusive speech about the Spirit cannot be forgiven.

2 Thessalonians 1:9

They will be punished with eternal ruin and exclusion from the presence of the Lord and his glorious might,

Jude 1:7

just as Sodom and Gomorrah and the neighboring towns which like them indulged in immorality and unnatural vice stand as a warning, in undergoing the punishment of eternal fire.

Jude 1:13

wild sea waves foaming up their own shame; wandering stars doomed forever to utter darkness.

Treasury of Scripture Knowledge

Summary

But he that shall blaspheme against the Holy Ghost hath never forgiveness, but is in danger of eternal damnation:

General references

Bible References

But is

Matthew 25:46
Then they will go away to everlasting punishment, and the upright to everlasting life."
2 Thessalonians 1:9
They will be punished with eternal ruin and exclusion from the presence of the Lord and his glorious might,
Jude 1:7
just as Sodom and Gomorrah and the neighboring towns which like them indulged in immorality and unnatural vice stand as a warning, in undergoing the punishment of eternal fire.

General references

Luke 12:10
And anyone who speaks against the Son of Man will be forgiven for it, but no one who reviles the holy Spirit will be forgiven.