How is it that you do not understand that I spoke not to you concerning bread, that you should beware of the leaven of the Pharisees and of the Sadducees?
And he said unto them, Are you so without understanding also? Do you not perceive, that whatsoever thing from outside enters into the man, it cannot defile him;
For when for the time you ought to be teachers, you have need that one teach you again which be the first principles of the oracles of God; and are become such as have need of milk, and not of solid food.