Luke 11:41

But give for alms those things which are within; and behold, everything is 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 yourselves know how unlawful it is for a Jew to associate with a foreigner or to visit him; but God has shown me that I should not call any man common or unclean.

Romans 14:14

I know and am convinced in the Lord Jesus that nothing is unclean in itself; but if anyone regards something as unclean, then for him it is unclean.

Romans 14:20

Do not, for the sake of food, destroy the work of God. Everything is indeed clean, but it is wrong for a man to eat anything that causes someone else to stumble.

2 Corinthians 6:17

Therefore come out from them and be separate, says the Lord. Touch no unclean thing, and I will receive you.

Titus 1:15

To the pure, all things are pure; but to those who are corrupted and unbelieving, nothing is pure, but both their minds and consciences are corrupted.

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 for alms those things which are within; and behold, everything is 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 convinced in the Lord Jesus that nothing is unclean in itself; but if anyone regards something as unclean, then for him it is unclean.
2 Corinthians 6:17
Therefore come out from them and be separate, says the Lord. Touch no unclean thing, and I will receive you.
Titus 1:15
To the pure, all things are pure; but to those who are corrupted and unbelieving, nothing is pure, but both their minds and consciences are corrupted.