Mark 7:15

There is nothing outside the man, entering into him that can defile him, but the things coming out of him those are the things that defile the man.

Leviticus 11:42-47

Whatever goes upon the belly, and whatever goes upon all fours, or whatever has many feet, even all creeping things that creep upon the earth, them ye shall not eat, for they are an abomination.

Proverbs 4:23

Keep thy heart with all diligence, for out of it are the issues of life.

Matthew 12:34

Ye offspring of vipers, how can ye, being evil, speak good things? For out of the abundance of the heart the mouth speaks.

Matthew 15:16

And Jesus said, Are ye also still without understanding?

Mark 7:18-23

And he says to them, Are also ye so without understanding? Do ye not perceive that everything outside that enters into the man cannot defile him,

Acts 10:14-16

But Peter said, Not so, Lord, because I have never eaten anything profane or unclean.

Acts 10:28

And he said to them, Ye understand how it is unlawful for a Jewish man to fraternize or to visit with a foreign man, and yet God demonstrated to me not to call one man profane or unclean.

Acts 11:8-10

But I said, Not so, Lord, because nothing profane or unclean has ever entered into my mouth.

Acts 15:20-21

but to write to them, to abstain from the pollutions of idols, and from fornication, and from what is strangled, and from blood.

Romans 14:17

For the kingdom of God is not eating and drinking, but righteousness and peace and joy in Holy Spirit.

1 Corinthians 10:25

Eat everything being sold in a meat market, inquiring of nothing because of the conscience,

1 Timothy 4:3-5

forbidding to marry, to abstain from foods, which God created for partaking with thankfulness by those who believe and know the truth.

Titus 1:15

Truly to the pure all things are pure, but to those who are defiled and unbelieving nothing is pure, but both their mind and their conscience are defiled.

Hebrews 9:10

only in foods and drinks and various washings: carnal ordinances imposed until a time of reformation.

Hebrews 13:9

Be not carried away by various and foreign doctrines. For it is good that the heart be established with grace, not with foods by which those who walked were not benefited.

Treasury of Scripture Knowledge

Summary

There is nothing from without a man, that entering into him can defile him: but the things which come out of him, those are they that defile the man.

Bible References

Nothing

Mark 7:18
And he says to them, Are also ye so without understanding? Do ye not perceive that everything outside that enters into the man cannot defile him,
Leviticus 11:42
Whatever goes upon the belly, and whatever goes upon all fours, or whatever has many feet, even all creeping things that creep upon the earth, them ye shall not eat, for they are an abomination.
Acts 10:14
But Peter said, Not so, Lord, because I have never eaten anything profane or unclean.
Acts 11:8
But I said, Not so, Lord, because nothing profane or unclean has ever entered into my mouth.
Acts 15:20
but to write to them, to abstain from the pollutions of idols, and from fornication, and from what is strangled, and from blood.
Romans 14:17
For the kingdom of God is not eating and drinking, but righteousness and peace and joy in Holy Spirit.
1 Corinthians 10:25
Eat everything being sold in a meat market, inquiring of nothing because of the conscience,
1 Timothy 4:3
forbidding to marry, to abstain from foods, which God created for partaking with thankfulness by those who believe and know the truth.
Titus 1:15
Truly to the pure all things are pure, but to those who are defiled and unbelieving nothing is pure, but both their mind and their conscience are defiled.
Hebrews 9:10
only in foods and drinks and various washings: carnal ordinances imposed until a time of reformation.
Hebrews 13:9
Be not carried away by various and foreign doctrines. For it is good that the heart be established with grace, not with foods by which those who walked were not benefited.

But

Mark 7:20
And he said, That which comes out of the man, that defiles the man.
Proverbs 4:23
Keep thy heart with all diligence, for out of it are the issues of life.
Matthew 12:34
Ye offspring of vipers, how can ye, being evil, speak good things? For out of the abundance of the heart the mouth speaks.
Matthew 15:16
And Jesus said, Are ye also still without understanding?

General references

Leviticus 11:2
Speak to the sons of Israel, saying, These are the living things which ye may eat among all the beasts that are on the earth.
Jeremiah 25:2
which Jeremiah the prophet spoke to all the people of Judah, and to all the inhabitants of Jerusalem, saying,
Matthew 13:9
He who has ears, let him hear.
Mark 7:20
And he said, That which comes out of the man, that defiles the man.