Luke 11:41

But give as charity the contents of the cup, and behold, all things are clean for you.

Acts 10:15-16

And the voice came to him again a second time: What God has cleansed, you must not call common.

Acts 10:28

And he said to them: You know that it is unlawful for a Jew to associate with one of another nation, or to go into his house. But God has showed me that I must not call any man common or unclean.

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 14:20

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.

2 Corinthians 6:17

For this reason, come out from among them, and separate yourselves, says the Lord, and touch not an unclean person, and I will receive you;

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.

Treasury of Scripture Knowledge

Summary

And the flesh that toucheth any unclean thing shall not be eaten; it shall be burnt with fire: and as for the flesh, all that be clean shall eat thereof.

Bible References

General references

Luke 11:41
But give as charity the contents of the cup, and behold, all things are clean for you.
Acts 10:15
And the voice came to him again a second time: What God has cleansed, you must not call common.
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.
2 Corinthians 6:17
For this reason, come out from among them, and separate yourselves, says the Lord, and touch not an unclean person, and I will receive you;
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.