Matthew 15:11

It is not what goes into the mouth that makes a person unclean. It is what comes out of the mouth that makes a person unclean."

Acts 10:14-15

But Peter said, "Absolutely not, Lord, for I have never eaten anything that is common or unclean!"

Mark 7:15

Nothing that goes into a person from the outside can make him unclean. It's what comes out of a person that makes a person unclean.

Psalm 10:7

Their mouth is full of curses, lies, and oppression, their tongues spread trouble and iniquity.

Psalm 12:2

Everyone speaks lies to his neighbor; they speak with flattering lips and hidden motives.

Psalm 52:2-4

Your tongue, like a sharp razor, devises wicked things and crafts treachery.

Psalm 58:3-4

The wicked go astray from the womb; they go astray, telling lies even from birth.

Isaiah 37:23

Whom have you insulted and reviled? Against whom have you raised your voice and lifted your eyes in pride? Against the Holy One of Israel!

Isaiah 59:3-5

For your hands are defiled with blood, and your fingers with iniquity; your tongue mutters wickedness.

Isaiah 59:13-15

they've rebelled in treachery against the LORD, and are turning away from following our God; and they've spoken oppression and revolt, and are conceiving lying words from the heart.

Jeremiah 9:3-6

They use their tongues like a bow. Lies rather than truth fly throughout the land. They progress from one evil to another, and they don't know me," declares the LORD.

Matthew 12:34-37

You children of serpents! How can you say anything good when you are evil? The mouth speaks about what overflows from the heart.

Matthew 15:18-20

But the things that come out of the mouth come from the heart, and it is those things that make a person unclean.

Luke 11:38-41

The Pharisee was surprised to see that he didn't first wash before the meal.

Acts 11:8-9

But I replied, "Absolutely not, Lord, for nothing common or unclean has ever entered my mouth!'

Romans 3:13-14

Their throats are open graves. With their tongues they deceive. The venom of poisonous snakes is under their lips.

Romans 14:14

I know and have been persuaded by the Lord Jesus that nothing is unclean in and of itself, but it is unclean to a person who thinks it is unclean.

Romans 14:17

For God's kingdom does not consist of food and drink, but of righteousness, peace, and joy produced by the Holy Spirit.

Romans 14:20

Do not destroy God's action for the sake of food. Everything is clean, but it is wrong to make another person stumble because of what you eat.

1 Timothy 4:4-5

For everything God created is good, and nothing should be rejected if it is received with thanksgiving,

Titus 1:15

Everything is clean to those who are clean, but nothing is clean to those who are corrupt and unbelieving. Indeed, their very way of thinking and their consciences have been corrupted.

Hebrews 13:9

Stop being carried away by all kinds of unusual teachings, for it is good that the heart be strengthened by grace, not by food laws that have never helped those who follow them.

James 3:5-8

In the same way, the tongue is a small part of the body, yet it can boast of great achievements. A huge forest can be set on fire by a little flame.

2 Peter 2:18

By talking high-sounding nonsense and using sinful cravings of the flesh, they entice people who have just escaped from 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.

Bible References

That which goeth

Mark 7:15
Nothing that goes into a person from the outside can make him unclean. It's what comes out of a person that makes a person unclean.
Luke 11:38
The Pharisee was surprised to see that he didn't first wash before the meal.
Acts 10:14
But Peter said, "Absolutely not, Lord, for I have never eaten anything that is common or unclean!"
Acts 11:8
But I replied, "Absolutely not, Lord, for nothing common or unclean has ever entered my mouth!'
Romans 14:14
I know and have been persuaded by the Lord Jesus that nothing is unclean in and of itself, but it is unclean to a person who thinks it is unclean.
1 Timothy 4:4
For everything God created is good, and nothing should be rejected if it is received with thanksgiving,
Titus 1:15
Everything is clean to those who are clean, but nothing is clean to those who are corrupt and unbelieving. Indeed, their very way of thinking and their consciences have been corrupted.
Hebrews 13:9
Stop being carried away by all kinds of unusual teachings, for it is good that the heart be strengthened by grace, not by food laws that have never helped those who follow them.

But

Matthew 15:18
But the things that come out of the mouth come from the heart, and it is those things that make a person unclean.
Matthew 12:34
You children of serpents! How can you say anything good when you are evil? The mouth speaks about what overflows from the heart.
Psalm 10:7
Their mouth is full of curses, lies, and oppression, their tongues spread trouble and iniquity.
Psalm 12:2
Everyone speaks lies to his neighbor; they speak with flattering lips and hidden motives.
Psalm 52:2
Your tongue, like a sharp razor, devises wicked things and crafts treachery.
Psalm 58:3
The wicked go astray from the womb; they go astray, telling lies even from birth.
Isaiah 37:23
Whom have you insulted and reviled? Against whom have you raised your voice and lifted your eyes in pride? Against the Holy One of Israel!
Isaiah 59:3
For your hands are defiled with blood, and your fingers with iniquity; your tongue mutters wickedness.
Jeremiah 9:3
They use their tongues like a bow. Lies rather than truth fly throughout the land. They progress from one evil to another, and they don't know me," declares the LORD.
Romans 3:13
Their throats are open graves. With their tongues they deceive. The venom of poisonous snakes is under their lips.
James 3:5
In the same way, the tongue is a small part of the body, yet it can boast of great achievements. A huge forest can be set on fire by a little flame.
2 Peter 2:18
By talking high-sounding nonsense and using sinful cravings of the flesh, they entice people who have just escaped from those who live in error.

General references

Leviticus 11:2
"Tell the Israelis that these are the living creatures that you may eat among the animals of the earth:
Matthew 15:18
But the things that come out of the mouth come from the heart, and it is those things that make a person unclean.
Luke 12:57
"Why don't you judge for yourselves what is right?

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