“Jesus cautioned them.
Beware of the yeast
Of the Pharisees
And the yeast
καὶ διεστέλλετο αὐτοῖς λέγων Ὁρᾶτε, βλέπετε ἀπὸ τῆς ζύμης τῶν Φαρισαίων καὶ τῆς ζύμης Ἡρῴδου.
This saying about the yeast of the Pharisees and Herod can be found in Matthew, chapter 16:6, and Luke, chapter 12:1, but there are slight differences. Matthew mentioned the Sadducees, while Mark was the only one to mention Herod, the Roman appointed political leader in Galilee. Mark said that Jesus cautioned or instructed his disciples (καὶ διεστέλλετο αὐτοῖς). They were to watch out for and be aware (Ὁρᾶτε, βλέπετε) of the yeast of the Pharisees (πὸ τῆς ζύμης τῶν Φαρισαίων) and the yeast of Herod (καὶ τῆς ζύμης Ἡρῴδου). This was a clear rebuff of both the Pharisees and Herod. Their growing yeast, leaven, or power was expanding. Like earlier in this chapter, there was no mention of the Scribes.