Luke 11:41

But give what is within them for alms; and, lo! all will be pure unto you.

Acts 10:15-16

And the voice again a second time came to him, What God hath cleansed, call not thou unclean.

Acts 10:28

And he said unto them, Ye know how contrary it is to established usage, for a man who is a Jew to associate with or visit one of another nation; but God hath shewed me to call no man common or unclean.

Romans 14:14

I know, and am convinced by the Lord Jesus, that there is nothing unclean of itself; but to him who thinketh any thing to be unclean, to him it is unclean.

Romans 14:20

For the sake of meat destroy not the work of God. All things indeed are clean; but it is an evil thing for a man to eat, giving offence.

2 Corinthians 6:17

"Wherefore go forth from the midst of them, and be ye separated, saith the Lord, and touch not the unclean; and I will receive you,

Titus 1:15

All things indeed are clean to the clean: but to the defiled and to the unbelievers there is nothing clean; but their very mind and conscience are defiled.

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 what is within them for alms; and, lo! all will be pure unto you.
Acts 10:15
And the voice again a second time came to him, What God hath cleansed, call not thou unclean.
Romans 14:14
I know, and am convinced by the Lord Jesus, that there is nothing unclean of itself; but to him who thinketh any thing to be unclean, to him it is unclean.
2 Corinthians 6:17
"Wherefore go forth from the midst of them, and be ye separated, saith the Lord, and touch not the unclean; and I will receive you,
Titus 1:15
All things indeed are clean to the clean: but to the defiled and to the unbelievers there is nothing clean; but their very mind and conscience are defiled.