Luke hath the same, Luke 11:23. Some understand this concerning the devil, whom he was so far from favouring, that his work was quite opposite. Some understand it concerning some neuters, that would neither show themselves for Christ nor against him. Our Saviour tells them, that this cause would bear no neutrality, they must be either for him or against him. But possibly it is best understood concerning the scribes and Pharisees, whom he lets know, that he was one who showed men the true way of life and salvation, and those that complied not with him were his enemies, and instead of gathering, scattered the sheep of God.
Related Commentaries of Matthew 12:30
Matthew 12:30
30 He that is not with me is against me; and he that gathereth not with me scattereth abroad.