For there are many unruly and vain talkers and deceivers - There are many persons who are indisposed to submit to authority (see the word unruly in Titus 1:6); many who are vain talkers - who are more given to talk than to the duties of practical religion (see the character of “Talkative,” in the Pilgrim’s Progress); and many who live to deceive others under the mask of religion. They make great pretensions to piety; they are fluent in argument, and they urge their views in a plausible manner.
Specially they of the circumcision - Jews, spoken of here as “of the circumcision” particularly, because they urged the necessity of circumcision in order that men might be saved; Notes, Acts 15:1. This proves that there were not a few Jews in the island of Crete.