23 And, having called them near, in similes he said to them, 'How is the Adversary able to cast out the Adversary? 24 and if a kingdom against itself be divided, that kingdom cannot be made to stand; 25 and if a house against itself be divided, that house cannot be made to stand; 26 and if the Adversary did rise against himself, and hath been divided, he cannot be made to stand, but hath an end. 27 'No one is able the vessels of the strong man—having entered into his house—to spoil, if first he may not bind the strong man, and then his house he will spoil.

Matthew Henry's Commentary on Mark 3:23-27

Commentary on Mark 3:22-30

(Read Mark 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.