Leviticus 7:19
And flesh touched by any unclean thing may not be taken for food: it is to be burned with fire; and as for the flesh of the peace-offerings, everyone who is clean may take it as food:
Leviticus 11:24-39
By these you will be made unclean; anyone touching their dead bodies will be unclean till evening:
Numbers 19:11-16
Anyone touching a dead body will be unclean for seven days:
Luke 11:41
But if you give to the poor such things as you are able, then all things are clean to you.
Acts 10:15-16
And the voice came to him a second time, What God has made clean, do not you make common.
Acts 10:28
And he said to them, You yourselves have knowledge that it is against the law for a man who is a Jew to be in the company of one who is of another nation; but God has made it clear to me that no man may be named common or unclean:
Romans 14:14
I am conscious of this, and am certain in the Lord Jesus, that nothing is unclean in itself; but for the man in whose opinion it is unclean, for him it is unclean.
Romans 14:20
Do not let the work of God come to nothing on account of food. All things are certainly clean; but it is evil for that man who by taking food makes it hard for another.
2 Corinthians 6:17
For which cause, Come out from among them, and be separate, says the Lord, and let no unclean thing come near you; and I will take you for myself,
Titus 1:15
To the clean in heart all things are clean: but to those who are unclean and without faith nothing is clean; they become unclean in mind and in thought.