29 whosoever shall speak slanderously against the Holy Spirit, shall never be pardoned, but be liable to eternal punishment.
Mark 3:29 Cross References - Living_Oracles
Matthew 12:31-32
31 Wherefore I say to you, though every other sin and detraction in men is pardonable, their detraction from the Spirit is unpardonable:
32 for whosoever shall inveigh against the Son of Man may obtain pardon; but whosoever shall speak against the Holy Spirit, shall never be pardoned, either in the present state or the future.
Matthew 25:46
46 And these shall go into eternal punishment, but the righteous into eternal life.
Luke 12:10
10 And whosoever shall inveigh against the Son of Man, may obtain remission; but to him who detracts from the Holy Spirit, there is no remission.
Mark 12:40
40 who devour the families of widows, and use long prayers for a disguise. They shall undergo the severest punishment.
2 Thessalonians 1:9
9 who shall suffer a just punishment-an everlasting destruction from the presence of the Lord, and from the glory of his power-
Jude 1:7
7 Likewise Sodom and Gomorrah, and the cities around them, which, after their example, had habitually committed uncleanness, and gone after other flesh, are set forth an example, suffering the punishment of an eternal fire.
Jude 1:13
13 raging waves of the sea, foaming out their own shame; wandering stars, for whom the blackness of darkness for ever is reserved.