Mark 3:6
And the Pharisees went forth, and straightway took counsel with the Herodians against him, how they might destroy him.
Cross-reference
Mark 12:13 shows Pharisees and Herodians again sent to catch Jesus in his words—a later execution of the same plot.
Mark 11:18 describes chief priests looking to kill Jesus, another instance of the lethal plotting that began in Mark 3:6.
Mark 8:15 warns of the 'yeast' of Pharisees and Herodians—the same coalition plotting in Mark 3:6, but now their corrupting influence.
Matthew 12:14 is the parallel account of this same plot — the Pharisees conspire to kill Jesus after the healing.
Matthew 22:16 parallels Mark 12:13: Pharisees and Herodians sent together to entrap Jesus, continuing the conspiracy.
Luke 6:11 is the parallel account — the Pharisees are furious and discuss what to do to Jesus.
In Luke 20:20, the same plotting continues: spies pretend sincerity to trap Jesus and hand him over to authorities.
Luke 22:2 shows chief priests seeking to kill Jesus, escalating the conspiracy from Mark 3:6 to the final plot.
John 11:53 records the Sanhedrin's explicit plot to kill Jesus, a direct parallel to the earlier Pharisee-Herodian conspiracy.
John 7:19 has Jesus directly accuse them: 'Why are you trying to kill me?'—confirming the plot from Mark 3:6 is ongoing.
John 5:16 shows Jewish leaders persecuting Jesus for Sabbath healing—an earlier stage of opposition leading to the death plot.