Mark 3:29

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

Matthew 25:46

And they will go away into eternal punishment, but the righteous into eternal life."

Mark 12:40

who devour widows' houses and for a pretense make long prayers. They will receive the greater condemnation."

Luke 12:10

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

Matthew 12:31-32

Therefore I tell you, every sin and blasphemy will be forgiven men, but the blasphemy against the Spirit will not be forgiven.

2 Thessalonians 1:9

They will suffer the punishment of eternal destruction and exclusion from the presence of the Lord and from the glory of his power,

Jude 1:7

just as Sodom and Gomorrah and the surrounding cities, which likewise acted immorally and indulged in strange flesh, serve as an example by undergoing a punishment of eternal fire.

Jude 1:13

wild waves of the sea, casting up their own shame like foam; wandering stars, for whom the blackest 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 a pretense make long prayers. They will receive the greater condemnation."
Matthew 25:46
And they will go away into eternal punishment, but the righteous into eternal life."
2 Thessalonians 1:9
They will suffer the punishment of eternal destruction and exclusion from the presence of the Lord and from the glory of his power,
Jude 1:7
just as Sodom and Gomorrah and the surrounding cities, which likewise acted immorally and indulged in strange flesh, serve as an example by undergoing a punishment of eternal fire.

General references

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