Commentaries:
Jamieson, Fausset, and Brown
And he charged them, saying, Take heed, beware of the leaven of the Pharisees—"and of the Sadducees" (Matthew 16:6).
and of the leaven of Herod—The teaching or "doctrine" (Matthew 16:12) of the Pharisees and of the Sadducees was quite different, but both were equally pernicious; and the Herodians, though rather a political party, were equally envenomed against our Lord's spiritual teaching. See on Matthew 12:14. The penetrating and diffusive quality of leaven, for good or bad, is the ground of the comparison.
Other Jamieson, Fausset, and Brown entries containing Mark 8:15:
Mark 8:13
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