Mark 3:29

but whoever blasphemes against the holy Spirit is never forgiven, he is guilty of an eternal sin."

Matthew 25:46

So they shall depart to eternal punishment, and the just to eternal life."

Mark 12:40

they prey upon the property of widows and offer long unreal prayers. All the heavier will their sentence be!"

Luke 12:10

Everyone also who says a word against the Son of man will be forgiven for it, but he who blasphemes against the holy Spirit will never be forgiven.

Matthew 12:31-32

I tell you therefore, men will be forgiven any sin and blasphemy, but they will not be forgiven for blaspheming the Spirit.

2 Thessalonians 1:9

men who will pay the penalty of being destroyed eternally from the presence of the Lord and from the glory of his might,

Jude 1:13

wild waves foaming out their own shame, wandering stars for whom the nether gloom of darkness has been reserved eternally.

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 prey upon the property of widows and offer long unreal prayers. All the heavier will their sentence be!"
Matthew 25:46
So they shall depart to eternal punishment, and the just to eternal life."
2 Thessalonians 1:9
men who will pay the penalty of being destroyed eternally from the presence of the Lord and from the glory of his might,

General references

Luke 12:10
Everyone also who says a word against the Son of man will be forgiven for it, but he who blasphemes against the holy Spirit will never be forgiven.