mark 12:13 And they send unto him certain of the Pharisees and of the Herodians, to catch him in his words. - Free Bible Online

      Mr 12:13-40. ENTANGLING QUESTIONS ABOUT TRIBUTE THE RESURRECTION, AND THE GREAT COMMANDMENT, WITH THE REPLIES--CHRIST BAFFLES THE PHARISEES BY A QUESTION ABOUT DAVID, AND DENOUNCES THE SCRIBES. ( = Mt 22:15-46; Lu 20:20-47).

      The time of this section appears to be still the third day (Tuesday) of Christ's last week. Matthew introduces the subject by saying (Mt 22:15), "Then went the Pharisees and took counsel how they might entangle Him in His talk."

      13. And they send unto him certain of the Pharisees--"their disciples," says Matthew (Mt 22:16); probably young and zealous scholars in that hardening school.
      and of the Herodians--(See on Mt 12:14). In Lu 20:20 these willing tools are called "spies, which should feign themselves just [righteous] men, that they might take hold of His words, that so they might deliver Him unto the power and authority of the governor." Their plan, then, was to entrap Him into some expression which might be construed into disaffection to the Roman government; the Pharisees themselves being notoriously discontented with the Roman yoke.

JFB.