Mark 3:29

but he who blasphemes against the Holy Spirit is never forgiven. Nay, he is in the grasp of an eternal sin."

Matthew 25:46

"And these will go away into eternal punishment; but the righteous into eternal life."

Mark 12:40

they who consume the property of widows and make long, pretentious prayers. The greater shall their condemnation be."

Luke 12:10

"If any one shall speak a word against the Son of man it shall be forgiven him; but he who is blasphemes against the Holy Spirit shall not be forgiven.

Matthew 12:31-32

"Therefore I tell you that every sin and blasphemy shall be forgiven men; but the blasphemy against the Holy Spirit shall not be forgiven.

2 Thessalonians 1:9

They shall suffer punishment, even an eternal destruction from the presence of the Lord, and from the brightness of his glorious majesty,

Jude 1:7

So also Sodom and Gomorrah and the near-by cities which in like manner glutted themselves in sensuality and unnatural vice, are exhibited as a warning of the eternal fire, in the punishment they undergo.

Jude 1:13

wild waves of the sea, foaming out their own shame; wandering stars, for whom is reserved the blackness of darkness 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
they who consume the property of widows and make long, pretentious prayers. The greater shall their condemnation be."
Matthew 25:46
"And these will go away into eternal punishment; but the righteous into eternal life."
2 Thessalonians 1:9
They shall suffer punishment, even an eternal destruction from the presence of the Lord, and from the brightness of his glorious majesty,
Jude 1:7
So also Sodom and Gomorrah and the near-by cities which in like manner glutted themselves in sensuality and unnatural vice, are exhibited as a warning of the eternal fire, in the punishment they undergo.

General references

Luke 12:10
"If any one shall speak a word against the Son of man it shall be forgiven him; but he who is blasphemes against the Holy Spirit shall not be forgiven.