“They sent

To Jesus,

Some Pharisees

And some Herodians,

To trap him

In what he said.”

 

Καὶ ἀποστέλλουσιν πρὸς αὐτόν τινας τῶν Φαρισαίων καὶ τῶν Ἡρῳδιανῶν ἵνα αὐτὸν ἀγρεύσωσιν λόγῳ

 

There is something similar in Matthew, chapter 22:15-16, and in Luke, chapter 20:20, as the Pharisees plotted to entrap or entangle Jesus in what he had said.  Mark said that the Pharisees sent some of their own people to Jesus (Καὶ ἀποστέλλουσιν πρὸς αὐτόν τινας τῶν Φαρισαίων).  The Pharisees were a political party, a social movement, and a religious school of thought that followed the Law of Moses, but with a number of oral traditions.  They had they own expert explanations of Jewish law that sometimes appeared to be hypocritical or arrogant, with a form of Judaism that extended beyond the Temple.  They were always testing or tempting Jesus and his disciples.  They also sent along some Herodians (καὶ τῶν Ἡρῳδιανῶν).  Who are these people?  They were the followers or political supporters of King Herod Antipas, the Roman client tetrarch king of Galilee, the one who had John the Baptist beheaded.  Both these groups were out to trap Jesus or catch him by using his own words against him (ἵνα αὐτὸν ἀγρεύσωσιν λόγῳ).