Mark 3:29

but whoever blasphemes against the Holy Spirit never has forgiveness, but is guilty of an eternal sin”

Matthew 25:46

These will go away into eternal punishment, but the righteous into eternal life.”

Mark 12:40

who devour widows’ houses, and for appearance’s sake offer long prayers; these will receive greater condemnation.”

Luke 12:10

And everyone who speaks a word against the Son of Man, it will be forgiven him; but he who blasphemes against the Holy Spirit, it will not be forgiven him.

Matthew 12:31-32

Therefore I say to you, any sin and blasphemy shall be forgiven people, but blasphemy against the Spirit shall not be forgiven.

2 Thessalonians 1:9

These will pay the penalty of eternal destruction, away from the presence of the Lord and from the glory of His power,

Jude 1:7

just as Sodom and Gomorrah and the cities around them, since they in the same way as these indulged in gross immorality and went after strange flesh, are exhibited as an example in undergoing the punishment of eternal fire.

Jude 1:13

wild waves of the sea, casting up their own shame like foam; wandering stars, for whom the black darkness has been reserved forever.

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

Mark 12:40
who devour widows’ houses, and for appearance’s sake offer long prayers; these will receive greater condemnation.”
Matthew 25:46
These will go away into eternal punishment, but the righteous into eternal life.”
2 Thessalonians 1:9
These will pay the penalty of eternal destruction, away from the presence of the Lord and from the glory of His power,
Jude 1:7
just as Sodom and Gomorrah and the cities around them, since they in the same way as these indulged in gross immorality and went after strange flesh, are exhibited as an example in undergoing the punishment of eternal fire.

General references

Luke 12:10
And everyone who speaks a word against the Son of Man, it will be forgiven him; but he who blasphemes against the Holy Spirit, it will not be forgiven him.