A mute man speaks, and the crowd reacts in three ways. Some marvel. Some accuse Jesus of working 15"by Beelzebul, the prince of demons." Others, apparently unmoved by a miracle they have just watched, keep asking for 16"a sign from heaven," as if this healing did not already count as one.
Jesus takes the accusation apart with plain logic. 17"Every kingdom divided against itself is laid waste." If Satan is casting out his own demons, he is wrecking his own kingdom, a poor strategy for any ruler. Then he turns the charge back on his critics with a question. 19"By whom do your sons cast them out?" Jewish exorcists existed too, and no one accused them of working for the devil. The objection came from a refusal to credit power they could not explain any other way.
Then he states his claim: if it is by the finger of God that he casts out demons, the kingdom of God has come upon them. The phrase "finger of God" reaches back to Egypt. Pharaoh's magicians watched Moses perform signs they could no longer copy or explain away, and they finally admitted, "This is the finger of God" (Exodus 8:19). What Pharaoh's magicians were forced to concede about Moses, Jesus' critics will not concede about him, even with a healed man standing in front of them. The finger that struck Egypt's gods is now driving out darkness one demon at a time, and the kingdom has arrived in plain sight.
He makes the stakes clear with a picture. 21"When a strong man, fully armed, guards his own palace, his goods are safe." But when 22"one stronger than he attacks him and overcomes him," the armor comes off and the spoil is divided. Satan is the strong man, and his hold on this world had gone largely unchallenged until now. Jesus is the stronger one. There is no neutral ground in the fight. 23"Whoever is not with me is against me, and whoever does not gather with me scatters." Watching from the sidelines is already a way of taking a side.
Then comes the warning that unsettles the whole scene. An unclean spirit is driven out and wanders through dry places looking for rest. Finding none, it returns to its old house and finds it 25"swept and put in order," clean and empty. It goes and brings back 26"seven other spirits more evil than itself," and the last state of that person is worse than the first.
Put the two halves together. The swept house is a picture of the neutral person. Nothing wicked lives there now, but nothing rules there either. An emptied life is not a safe one. Deliverance that only removes the old evil and does not fill the space leaves the door open for something worse. What the house needs is what Jesus has just announced, the kingdom of God moving in as the permanent tenant.
Ask what you have swept clean in your own life, a habit, a grudge, a sin, and whether you have invited the stronger one to occupy the space. The goal is being filled.
Prayer
Father, thank you for a kingdom that has come upon us in your Son, driving back darkness by the same finger that freed your people from Egypt. Keep us from the neutrality this passage warns against. Where you have swept a house clean in us, fill it so fully with your presence that nothing worse finds room to return. In Jesus' name, amen.