Luke 6:15 - Clarke's commentary and critical notes on the Bible

Matthew and Thomas, James the son of Alphaeus, and Simon called Zelotes, Called Zelotes - Some Jews gave this name to themselves, according to Josephus, (War, b. iv. c. iii. s. 9, and vii. c. viii. s. 1), "because they pretended to be more than ordinarily zealous for religion, and yet practised the very worst of actions." "But this (says the judicious Bp. Pearce) Josephus says of the zealots, at the time when Vespasian was marching towards Jerusalem. They probably were men of a different character above forty years before; which was the time when Jesus chose his twelve apostles, one of whom had the surname of the Zealot." It is very probable that this name was first given to certain persons who were more zealous for the cause of pure and undefiled religion than the rest of their neighbors; but like many other sects and parties who have begun well, they transferred their zeal for the essentials of religion to nonessential things, and from these to inquisitorial cruelty and murder. See on Matthew 10:4 (note).