(30) Because they said.--This, it will be noted, is peculiar to St. Mark. It is as though he would explain to his readers what it was that had called forth so awful a warning. He does not absolutely identify what had been said with the sin against the Holy Ghost, but it tended to that sin, and therefore made the warning necessary.

3:22-30 It was plain that the doctrine of Christ had a direct tendency to break the devil's power; and it was as plain, that casting of him out of the bodies of people, confirmed that doctrine; therefore Satan could not support such a design. Christ gave an awful warning against speaking such dangerous words. It is true the gospel promises, because Christ has purchased, forgiveness for the greatest sins and sinners; but by this sin, they would oppose the gifts of the Holy Ghost after Christ's ascension. Such is the enmity of the heart, that unconverted men pretend believers are doing Satan's work, when sinners are brought to repentance and newness of life.Because they, said, he hath an, unclean spirit. They charged Christ with having a devil, and his miracles with being wrought by the help of the devil; when, at the same time, they knew in their own consciences they were works which were wrought by the finger and Spirit of God, and so were guilty of the sin against the Holy Ghost; the unpardonable sin, for which there is no remission: and this is mentioned as a reason why our Lord said what he did concerning that sin; because they had been guilty of it, and so were liable to everlasting punishment on account of it.