Matthew says, “of the leaven of the Pharisees and of the Sadducees;” Luke, however, of the Pharisees only. All three, therefore, name the Pharisees, as being the most important of them, but Matthew and Mark have each mentioned one of the secondary sects; and fitly has Mark added “of Herod,” as a supplement to Matthew’s narrative, in which they were left out.
But in saying this, He by degrees brings the disciples to understanding and faith.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Vict. Ant. e Cat. in Marc.