Leviticus 7:19

And the meat that touches anything unclean must not be eaten; it must be burned with fire, and as for the [clean] meat, anyone who is clean may eat the meat.

Leviticus 11:24-39

And by these you shall become unclean--anyone who touches their dead body shall become unclean until the evening,

Numbers 19:11-16

" 'The one who touches a corpse of {any person} will be unclean for seven days.

Luke 11:41

But give [as] charitable giving the things that are within, and behold, everything is clean for you.

Acts 10:15-16

And the voice [came] again to him for the second time: "[The things] which God has made clean, you must not consider unclean!"

Acts 10:28

And he said to them, "You know that it is forbidden for a Jewish man to associate with or to approach a foreigner. And to me God has shown [that] I should call no man common or unclean.

Romans 14:14

I know and am convinced in the Lord Jesus that nothing [is] unclean of itself, except to the one who considers something to be unclean; to that person [it is] unclean.

Romans 14:20

Do not destroy the work of God on account of food. All [things] [are] clean, but [it is] wrong for the person {who eats and stumbles in the process}.

2 Corinthians 6:17

Therefore "come out from their midst and be separate," says the Lord, "and do not touch what is unclean, and I will welcome you,

Titus 1:15

To the pure all [things] [are] pure, but to those who are defiled and unbelieving nothing [is] pure, but both their 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

Leviticus 11:24
And by these you shall become unclean--anyone who touches their dead body shall become unclean until the evening,
Numbers 19:11
" 'The one who touches a corpse of {any person} will be unclean for seven days.
Luke 11:41
But give [as] charitable giving the things that are within, and behold, everything is clean for you.
Acts 10:15
And the voice [came] again to him for the second time: "[The things] which God has made clean, you must not consider unclean!"
Romans 14:14
I know and am convinced in the Lord Jesus that nothing [is] unclean of itself, except to the one who considers something to be unclean; to that person [it is] unclean.
2 Corinthians 6:17
Therefore "come out from their midst and be separate," says the Lord, "and do not touch what is unclean, and I will welcome you,
Titus 1:15
To the pure all [things] [are] pure, but to those who are defiled and unbelieving nothing [is] pure, but both their mind and conscience are defiled.