Mark 3:29

But whoever blasphemes against the Holy Spirit does not have forgiveness {forever}, but is guilty of [an] eternal sin"--

Matthew 25:46

And these will depart into eternal punishment, but the righteous into eternal life."

Mark 12:40

who devour the houses of widows and pray lengthy [prayers] for the sake of appearance. These will receive more severe condemnation!"

Luke 12:10

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

Matthew 12:31-32

For this [reason] I tell you, every sin and blasphemy will be forgiven people, but the blasphemy against the Spirit will not be forgiven!

2 Thessalonians 1:9

who will pay the penalty [of] eternal destruction, away from the presence of the Lord and from the glory of his strength,

Jude 1:7

as Sodom and Gomorrah and the towns around them indulged in sexual immorality and {pursued unnatural desire} [in] the same way as these, are exhibited as an example [by] undergoing the punishment of eternal fire.

Jude 1:13

wild waves of the sea foaming up their own shameful deeds, wandering stars, for whom the deep gloom of darkness has been reserved for eternity.

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 the houses of widows and pray lengthy [prayers] for the sake of appearance. These will receive more severe condemnation!"
Matthew 25:46
And these will depart into eternal punishment, but the righteous into eternal life."
2 Thessalonians 1:9
who will pay the penalty [of] eternal destruction, away from the presence of the Lord and from the glory of his strength,
Jude 1:7
as Sodom and Gomorrah and the towns around them indulged in sexual immorality and {pursued unnatural desire} [in] the same way as these, are exhibited as an example [by] 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 to the one who blasphemes against the Holy Spirit, it will not be forgiven.