I like thatHankD said: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.
The Spirit within Jesus was The Holy Spirit, therefore they were saying that the Holy Spirit was unclean. They blasphemed directly against the Spirit of God.
HankD