Matthew 16:12

“Then understood they, etc.] Without any further explication of his sense and meaning, how that he bade them not beware of the leaven of bread: which sense they first took him in; imagining, because the Pharisees were very particular and precise what sort of leaven they made use of f917, that Christ forbad them buying bread that was made with leaven according to their directions: and since their rules in everything prevailed much in all places, they were concerned what bread they must, or could buy; but now they perceived that he did not speak of this, but of the doctrine of the Pharisees and of the Sadducees. It was very common with the Jews f918 to call the corruption and vitiosity of…”

“The account in these verses is also recorded in Mark 8:13-21. Matthew 16:5 And when his disciples were come to the other side - That is, to the other side of the Sea of Galilee. Mark says that he entered into a ship again, and departed to the other side. The conversation with the Pharisees and Sadducees had been on the western side of the Sea of Galilee. See the notes at Matthew 15:39. They crossed from that side again to the east. Had forgotten to take bread - That is, had forgotten to lay in a sufficient supply. They had, it seems, not more than one loaf, Mark 8:14. Matthew 16:6-11 Take heed ... - That is, be cautious, be on your guard. The leaven of the Pharisees and Sadducees - Leaven is…”

“but: Mat 15:4-9, 23:13-28; Act 23:8 Matthew 16:13”