So, they sent their disciples, [along] with the Herodians to Him [Note: These were members of a political party favoring King Herod], saying, "Teacher, we know that you are sincere, and that you teach the truth about God's way. You do not care for [i.e., do not fear or give in to] anyone or allow the position of any person to influence you.

And the Pharisees immediately went out and conferred with the Herodians against Jesus, plotting how they could kill Him. [Note: These Herodians were members of a political party favoring King Herod]

Then Jesus ordered them, saying, "Pay attention and watch out for the leavening [effect] of the Pharisees and Herod." [Note: By "Herod" is probably meant the Herodians, who were a party favorable to King Herod and, along with the Pharisees and Sadducees, were out to get Jesus. See Matt. 16:6].

Then the Pharisees sent certain ones of their number [See Matt. 22:15-16] along with the Herodians [Note: This refers to members of a political party favoring King Herod] to attempt to trap Him by what He said.