With one another
What they might do
αὐτοὶ δὲ ἐπλήσθησαν ἀνοίας, καὶ διελάλουν πρὸς ἀλλήλους τί ἂν ποιήσαιεν τῷ Ἰησοῦ.
Luke said that they were filled with rage or fury (ὐτοὶ δὲ ἐπλήσθησαν ἀνοίας). They discussed with one another (καὶ διελάλουν πρὸς ἀλλήλους) what they might do to Jesus (τί ἂν ποιήσαιεν τῷ Ἰησοῦ). Matthew, chapter 12:14, and Mark, chapter 3:6, are similar to Luke. However, Mark was the only one to mention both the Pharisees and the Herodians. Matthew mentioned just the Pharisees, while Luke used the vague “they”. Mark said that the Pharisees conspired with the Herodians against Jesus. They wondered how they could destroy or kill him. The Herodians were not a religious group but a political group that backed the Galilean governor Herod Antipas (4-39 CE). Right from the beginning, there was this animosity between Jesus and the religious leaders of the Pharisees and the local political leaders of Herod. Matthew has this episode end with only the Pharisees getting together to conspire to destroy Jesus. However, the wording was a little different among these synoptic writers, but all these people conspired on how to grab, destroy, or kill Jesus.