Adam Clarke's Commentary on the Bible - Luke 4:33
A spirit of an unclean devil - As demon was used both in a good and bad sense before and after the time of the evangelists the word unclean may have been added here by St. Luke, merely to express the quality of this spirit. But it is worthy of remark, that the inspired writers never use the word δαιμων , demon, in a good sense. See the whole of this case explained, Mark 1:23 ; (note), etc. read more
Adam Clarke's Commentary on the Bible - Luke 4:32
His word was with power - Εν εξουσιᾳ , With authority. He assumed the tone and manner of a new Lawgiver; and uttered all his doctrines, not in the way of exhortation or advice, but in the form of precepts and commands, the unction of the Holy Spirit accompanying all he said. See on Mark 1:22 ; (note). read more