Matthew

And he charged them, saying, Take heed, beware of the leaven of the Pharisees, and of the leaven of Herod.

And refused to obey, neither were mindful of thy wonders that thou didst among them; but hardened their necks, and in their rebellion appointed a captain to return to their bondage: but thou art a God ready to pardon, gracious and merciful, slow to anger, and of great kindness, and forsookest them not.

And he saith unto them, Are ye so without understanding also? Do ye not perceive, that whatsoever thing from without entereth into the man, it cannot defile him;

Then Jesus said unto them, Take heed and beware of the leaven of the Pharisees and of the Sadducees.

Beware of false prophets, which come to you in sheep’s clothing, but inwardly they are ravening wolves.