Matthew 15:16

¹⁴  Let them alone: they be blind leaders of the blind. And if the blind lead the blind, both shall fall into the ditch.

¹⁵  Then answered Peter and said unto him, Declare unto us this parable.

¹⁶  And Jesus said, Are ye also yet without understanding?

¹⁷  Do not ye yet understand, that whatsoever entereth in at the mouth goeth into the belly, and is cast out into the draught?

¹⁸  But those things which proceed out of the mouth come forth from the heart; and they defile the man.