King James Version (KJV) Authorized Version 1611
Read Full Chapter (Matthew 15)

Matthew 15:17-18 KJV

"Do not ye yet understand, that whatsoever entereth in at the mouth goeth into the belly, and is cast out into the draught? But those things which proceed out of the mouth come forth from the heart; and they defile the man."
Matthew Chapter 15, Verse 17-18

Matthew 15:17-18 in Context (Verses 14–21 KJV)

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.
19
For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies:
20
These are the things which defile a man: but to eat with unwashen hands defileth not a man.
21
Then Jesus went thence, and departed into the coasts of Tyre and Sidon.