Mark 3:29

But the person who speaks against the Holy Spirit can never be forgiven, for he is guilty of a never ending sin."

Matthew 25:46

And these [i.e., the ones at His left side] will go away to never ending punishment, but those who did what was right will go to never ending life."

Mark 12:40

They consume widows' houses [i.e., by foreclosing on them] and [then] cover it up by offering lengthy prayers. These people will receive a more severe judgment."

Luke 12:10

And every person who speaks an [abusive] word against the Son of man will be forgiven of it, but the person who speaks abusive words against the Holy Spirit will not be forgiven of it.

Matthew 12:31-32

Therefore I tell you, people will be forgiven of every sin and abusive word spoken [against God]. But abusive words spoken against the Holy Spirit will not be forgiven.

2 Thessalonians 1:9

They will pay the penalty of never ending destruction, being banished from the presence of the Lord and from His mighty splendor.

Jude 1:7

So also, in a similar way, Sodom and Gomorrah, and their surrounding towns, which had abandoned themselves to sexual immorality and [sexually] perverted behavior, serve as an example [of people] who [will] suffer the punishment of never ending fire.

Jude 1:13

[They are like] raging ocean waves, whose shameful actions bubble up like foam. [They are like] shooting stars [whose light quickly goes out], for whom total 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
They consume widows' houses [i.e., by foreclosing on them] and [then] cover it up by offering lengthy prayers. These people will receive a more severe judgment."
Matthew 25:46
And these [i.e., the ones at His left side] will go away to never ending punishment, but those who did what was right will go to never ending life."
2 Thessalonians 1:9
They will pay the penalty of never ending destruction, being banished from the presence of the Lord and from His mighty splendor.
Jude 1:7
So also, in a similar way, Sodom and Gomorrah, and their surrounding towns, which had abandoned themselves to sexual immorality and [sexually] perverted behavior, serve as an example [of people] who [will] suffer the punishment of never ending fire.

General references

Luke 12:10
And every person who speaks an [abusive] word against the Son of man will be forgiven of it, but the person who speaks abusive words against the Holy Spirit will not be forgiven of it.