Mark 3:29

But he that shall blaspheme against the Holy Ghost hath never forgiveness, but is in danger of eternal damnation:

Matthew 25:46

And these shall go away into everlasting punishment: but the righteous into life eternal.

Mark 12:40

Which devour widows' houses, and for a pretence make long prayers: these shall receive greater damnation.

Luke 12:10

And whosoever shall speak a word against the Son of man, it shall be forgiven him: but unto him that blasphemeth against the Holy Ghost it shall not be forgiven.

Matthew 12:31-32

Wherefore I say unto you, All manner of sin and blasphemy shall be forgiven unto men: but the blasphemy against the Holy Ghost shall not be forgiven unto men.

2 Thessalonians 1:9

Who shall be punished with everlasting destruction from the presence of the Lord, and from the glory of his power;

Jude 1:7

Even as Sodom and Gomorrha, and the cities about them in like manner, giving themselves over to fornication, and going after strange flesh, are set forth for an example, suffering the vengeance of eternal fire.

Jude 1:13

Raging waves of the sea, foaming out their own shame; wandering stars, to whom is reserved the blackness of darkness for ever.

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
Which devour widows' houses, and for a pretence make long prayers: these shall receive greater damnation.
Matthew 25:46
And these shall go away into everlasting punishment: but the righteous into life eternal.
2 Thessalonians 1:9
Who shall be punished with everlasting destruction from the presence of the Lord, and from the glory of his power;
Jude 1:7
Even as Sodom and Gomorrha, and the cities about them in like manner, giving themselves over to fornication, and going after strange flesh, are set forth for an example, suffering the vengeance of eternal fire.

General references

Luke 12:10
And whosoever shall speak a word against the Son of man, it shall be forgiven him: but unto him that blasphemeth against the Holy Ghost it shall not be forgiven.

King James Version Public Domain