Matthew 15:11

"Listen to this, and grasp it! It is not what goes into a man's mouth that pollutes him; it is what comes out of his mouth that pollutes a man."

Acts 10:14-15

But Peter said, "Never, sir! For I have never eaten anything that was not ceremonially cleansed."

Mark 7:15

Nothing that goes into a man from outside can pollute him. It is what comes out of a man that pollutes him."

Matthew 12:34-37

You brood of snakes! how can you, bad as you are, utter anything good? For the mouth says only what the heart is full of.

Matthew 15:18-20

But the things that come out of the mouth come from the heart, and they pollute a man.

Luke 11:38-41

The Pharisee noticed that he did not wash before the meal, and he was surprised.

Acts 11:8-9

But I said, 'Never, sir! For nothing that was not ceremonially cleansed has ever passed my lips.'

Romans 3:13-14

Their throats are like open graves, They use their tongues to deceive; The venom of asps is behind their lips,

Romans 14:14

I know and as a follower of the Lord Jesus I am convinced that nothing is unclean in itself; a thing is unclean only to the man who regards it as unclean.

Romans 14:17

The Kingdom of God is not a matter of what we eat or drink, but of uprightness, peace, and happiness through the possession of the holy Spirit.

Romans 14:20

You must not, just for the sake of food, undo the work of God. It is true, everything is clean, but it is wrong for a man to hurt the consciences of others by what he eats.

1 Timothy 4:4-5

For everything God has created is good, and nothing need be refused, provided it is accepted with thanksgiving,

Titus 1:15

To the pure everything is pure, but to the evil-minded and unbelieving nothing is pure, but their very minds and consciences are unclean.

Hebrews 13:9

You must not be carried away with strange varieties of teaching. The true way to steadfastness of heart is through God's mercy, not through scruples about food, which have never done their adherents any good.

James 3:5-8

So the tongue is a little organ and yet very boastful. What a great forest a spark will set on fire!

2 Peter 2:18

They utter arrogant nonsense and use physical cravings to lure into immorality men who are just escaping from among those who live in error;

Treasury of Scripture Knowledge

Summary

Not that which goeth into the mouth defileth a man; but that which cometh out of the mouth, this defileth a man.

General references

Bible References

That which goeth

Mark 7:15
Nothing that goes into a man from outside can pollute him. It is what comes out of a man that pollutes him."
Luke 11:38
The Pharisee noticed that he did not wash before the meal, and he was surprised.
Acts 10:14
But Peter said, "Never, sir! For I have never eaten anything that was not ceremonially cleansed."
Acts 11:8
But I said, 'Never, sir! For nothing that was not ceremonially cleansed has ever passed my lips.'
Romans 14:14
I know and as a follower of the Lord Jesus I am convinced that nothing is unclean in itself; a thing is unclean only to the man who regards it as unclean.
1 Timothy 4:4
For everything God has created is good, and nothing need be refused, provided it is accepted with thanksgiving,
Titus 1:15
To the pure everything is pure, but to the evil-minded and unbelieving nothing is pure, but their very minds and consciences are unclean.
Hebrews 13:9
You must not be carried away with strange varieties of teaching. The true way to steadfastness of heart is through God's mercy, not through scruples about food, which have never done their adherents any good.

But

Matthew 15:18
But the things that come out of the mouth come from the heart, and they pollute a man.
Matthew 12:34
You brood of snakes! how can you, bad as you are, utter anything good? For the mouth says only what the heart is full of.
Romans 3:13
Their throats are like open graves, They use their tongues to deceive; The venom of asps is behind their lips,
James 3:5
So the tongue is a little organ and yet very boastful. What a great forest a spark will set on fire!
2 Peter 2:18
They utter arrogant nonsense and use physical cravings to lure into immorality men who are just escaping from among those who live in error;

General references

Matthew 15:18
But the things that come out of the mouth come from the heart, and they pollute a man.
Luke 12:57
Why do you not decide what is right yourselves?