'Unclean' in the Bible

However, you must not eat these animals that chew the cud or have a divided hoof: the camel, hare, and rock badger. Even though they chew the cud, their hooves are not divided. Therefore they are unclean for you.

And also the pig, because even though its hoof is divided, it does not chew the cud. It is therefore unclean for you. You must not eat their meat or even touch their carcasses.

but you may not eat anything without fin and scale, since it is unclean to you.

Any winged, swarming insect is unclean to you. They must not be eaten.

In your cities both the unclean and the clean together are to eat together, as the gazelle and the deer.

If someone among you becomes unclean due to nocturnal emissions, he must leave the camp and stay outside.

"I've removed the holy offering from my house and given it to the descendants of Levi, to the foreigners, to the orphans, and to the widows just as you have commanded me. I haven't violated or forgotten your commands. I haven't eaten any part of it while mourning, nor removed any part of it while unclean, nor offered any of it to the dead. I've obeyed the voice of the LORD my God and did all that he commanded me.