Matthew 15:11
Not that which goes into the mouth defiles a man; but that which comes out of the mouth, this defiles a man.
Acts 10:14-15
But Peter said, Not so, Lord; for I have never eaten anything that is common or unclean.
Mark 7:15
There is nothing from outside a man, that entering into him can defile him: but the things which come out of him, those are they that defile the man.
Psalm 10:7
His mouth is full of cursing and deceit and fraud: under his tongue is mischief and vanity.
Psalm 12:2
They speak vanity every one with his neighbor: with flattering lips and with a double heart do they speak.
Psalm 52:2-4
Your tongue devises evil; like a sharp razor, working deceitfully.
Psalm 58:3-4
The wicked are estranged from the womb: they go astray as soon as they are born, speaking lies.
Isaiah 37:23
Whom have you reproached and blasphemed? and against whom have you exalted your voice, and lifted up your eyes on high? even against the Holy One of Israel.
Isaiah 59:3-5
For your hands are defiled with blood, and your fingers with iniquity; your lips have spoken lies, your tongue has muttered perverseness.
Isaiah 59:13-15
In transgressing and lying against the LORD, and departing away from our God, speaking oppression and revolt, conceiving and uttering from the heart words of falsehood.
Jeremiah 9:3-6
And they bend their tongues like their bow for lies: but they are not valiant for the truth upon the earth; for they proceed from evil to evil, and they know not me, says the LORD.
Matthew 12:34-37
O generation of vipers, how can you, being evil, speak good things? for out of the abundance of the heart the mouth speaks.
Matthew 15:18-20
But those things which proceed out of the mouth come forth from the heart; and they defile the man.
Luke 11:38-41
And when the Pharisee saw it, he marveled that he had not first washed before dinner.
Acts 11:8-9
But I said, Not so, Lord: for nothing common or unclean has at any time entered into my mouth.
Romans 3:13-14
Their throat is an open sepulcher; with their tongues they have used deceit; the poison of asps is under their lips:
Romans 14:14
I know, and am persuaded by the Lord Jesus, that there is nothing unclean of itself: but to him that esteems anything to be unclean, to him it is unclean.
Romans 14:17
For the kingdom of God is not food and drink; but righteousness, and peace, and joy in the Holy Spirit.
Romans 14:20
For food destroy not the work of God. All things indeed are pure; but it is evil for that man who eats with offense.
1 Timothy 4:4-5
For every creature of God is good, and nothing to be refused, if it be received with thanksgiving:
Titus 1:15
Unto the pure all things are pure: but unto them that are defiled and unbelieving is nothing pure; but even their mind and conscience are defiled.
Hebrews 13:9
Be not carried about with various and strange doctrines. For it is a good thing that the heart be established with grace; not with foods, which have not profited them that have been observing them.
James 3:5-8
Even so the tongue is a little member, and boasts great things. Behold, how great a forest a little fire kindles!
2 Peter 2:18
For when they speak great swelling words of vanity, they allure through the lusts of the flesh, through much wantonness, those that have just escaped from them who live in error.