Expositor's Bible Commentary Commentary Mark 3:25

"And if a house be divided against itself, that house will not be able to stand." — Mark 3:25 (ASV)

Jesus replied to the charge by making a comparison. His argument is as follows: I have just cast out demons. Now if I am doing this by Satan’s power, then Satan is actually working against himself. But that would be absurd. Just as a house or a kingdom cannot stand if it is divided against itself or opposes itself, so Satan will bring about his own destruction by working against himself. In essence, Jesus was saying two things: (1) he cannot be in collusion with Satan; and (2) he is actually destroying Satan’s work, which means he is more powerful than Satan.

By the parable of v.27, Jesus implies that he is tying up Satan in order to deliver from bondage those under Satan’s control. That was, after all, one of his main tasks .