Mark 3:29

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

Mark 3:29 In-Context

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.
28 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.
31 There came then his brethren and his mother, and, standing without, sent unto him, calling him.
The King James Version is in the public domain.