Matthew 15:11
That which enters the mouth does not defile the man; but that which comes out of the mouth, this defiles the man.
Acts 10:14-15
But Peter said: By no means, Lord; for I have never eaten any thing common or unclean.
Mark 7:15
There is nothing with out that, by entering into a man, can defile him. But those things which come out of the man, defile him.
Matthew 12:34-37
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 go out from the mouth, come from the heart; and these defile the man.
Luke 11:38-41
And when the Pharisee saw it, he wondered that he had not first immersed himself before dinner.
Acts 11:8-9
But I said, By no means, Lord; for nothing common or unclean has ever entered 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 in the Lord Jesus, that there is nothing unclean of itself; but if any one thinks that any thing is 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
Destroy not the work of God on account of food. All meats, indeed, are clean; but meat is an evil to that man who, by eating, causes another to stumble.
1 Timothy 4:4-5
For every creature of God is good, and nothing is to be rejected, if it be received with thanksgiving;
Titus 1:15
To the pure, all things are pure: but to the denied and unbelieving, nothing is pure; but their mind and their conscience are denied.
Hebrews 13:9
Be not carried away by various and strange teachings: for it is good that the heart be strengthened with grace, not with meats, which have not profited those who were occupied with them.
James 3:5-8
So, also, the tongue is a little member, and boasts great things. Behold, how great a forest does a little fire set in a blaze.
2 Peter 2:18
For by speaking boastful words of folly, they allure through the lusts of the flesh, and through lasciviousness, those who had really escaped from those who live in error.