John Gill

For unclean spirits,.... Devils, so called because they were unclean themselves, defiled others, add delighted in impure persons and places; See Gill on Mat 10:1. crying with loud voice; showing their unwillingness to remove, and the irresistibleness of divine power they could not withstand: came out of many that were possessed with them; who had for a long time dwelt in them, and had greatly afflicted them: and many taken with palsies, and that were lame, were healed; by Philip, in the name of Christ, through a word speaking, or by touching them, without making use of any means or medicines.