Mark 3:28

²⁶ And if Satan rise up against himself, and be divided, he cannot stand, but hath an end.

²⁷ No man can enter into a strong man’s house, and spoil his goods, except he will first bind the strong man; and then he will spoil his house.

Verily I say unto you, All sins shall be forgiven unto the sons of men, and blasphemies wherewith soever they shall blaspheme:

²⁹ But he that shall blaspheme against the Holy Ghost hath never forgiveness, but is in danger of eternal damnation:

³⁰ Because they said, He hath an unclean spirit.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB: Truly I tell you, the sons of men will be forgiven all sins and blasphemies, as many as they utter.
KJV: Verily I say unto you, All sins shall be forgiven unto the sons of men, and blasphemies wherewith soever they shall blaspheme:
WEB: “Most certainly I tell you, all sins of the descendants of man will be forgiven, including their blasphemies with which they may blaspheme;
ASV: Verily I say unto you, All their sins shall be forgiven unto the sons of men, and their blasphemies wherewith soever they shall blaspheme:
DARBY: Verily I say unto you, that all sins shall be forgiven to the sons of men, and all the injurious speeches [with] which they may speak injuriously;
BLB: Truly I say to you⁺ that all sins and blasphemies will be forgiven the sons of men, as many as they may blaspheme.

ÅB: Sannelig sier jeg dere: Alle synder skal bli menneskenes barn tilgitt, og alle bespottelser som de taler;
OTB: Sannelig, jeg sier dere, mennesker kan bli tilgitt alle sine synder og hva enn blasfemier de ytrer,
B1930: Sannelig sier jeg eder: Alle synder skal bli menneskenes barn forlatt, og alle bespottelser som de taler;

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.
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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.
Read in context
1 John 5:16
If any man see his brother sin a sin which is not unto death, he shall ask, and he shall give him life for them that sin not unto death. There is a sin unto death: I do not say that he shall pray for it.
Read in context
Mark 3:28–30
Verily I say unto you, All sins shall be forgiven unto the sons of men, and blasphemies wherewith soever they shall blaspheme:
Read in context
Hebrews 6:4–8
For it is impossible for those who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the Holy Ghost,
Read in context
Hebrews 10:26–31
For if we sin wilfully after that we have received the knowledge of the truth, there remaineth no more sacrifice for sins,
Read in context