Thematic Bible: Unclean and not eaten

All these are unclean to you: anyone touching them when they are dead will be unclean till evening. Verse ConceptsCorpses Of AnimalsUnclean Until Evening

And he who makes use of any part of its body for food is to have his clothing washed and be unclean till evening; and anyone taking away its body is to have his clothing washed and be unclean till evening. Everything which goes flat on its body on the earth is disgusting, and is not to be used for food. Whatever goes on its stomach or on four feet or has a great number of feet, even all those going flat on the earth, may not be used for food, for they are disgusting. read more.
You are not to make yourselves disgusting with anything which goes about flat on the earth; you may not make yourselves unclean with them, in such a way that you are not holy to me.

And he saw the heavens opening, and a vessel coming down, like a great cloth let down on the earth, In which were all sorts of beasts and birds. And a voice came to him, saying, Come, Peter; take them for food. read more.
But Peter said, No, Lord; for I have never taken food which is common or unclean.