Matthew Chapter 16, Verse 6
From BibleWiki
6: ο δε ιησους ειπεν αυτοις ορατε και προσεχετε απο της ζυμης των φαρισαιων και σαδδουκαιων
6: Then Jesus said unto them, Take heed and beware of the leaven
of the Pharisees and of the Sadducees.
6: Who said to them: Take heed and beware of the leaven of the
Pharisees and Sadducees.
Take heed, etc. That is, be cautious, be on your guard.
The leaven of the Pharisees and of the Sadducees. Leaven is used in making bread. Its use is to pass through the flour, and cause it to ferment or to swell, and become light. It passes secretly, silently, but certainly. None can see its progress. So it was with the doctrines of the Pharisees. They were insinuating, artful, plausible. They concealed the real tendency of their doctrines, they instilled them secretly into the mind, and they pervaded all the faculties, like leaven.

