He saw heaven opened and something like a large sheet being let down to earth by its four corners. It contained all kinds of four-footed animals, as well as reptiles of the earth and birds of the air. Then a voice told him, "Get up, Peter. Kill and eat."By the way, in case it wasn't obvious, Jewish people weren't allowed to eat reptiles. And they couldn't eat all kinds of birds of the air -- only some birds of the air. Ditto the four-footed creatures."Surely not, Lord!" Peter replied. "I have never eaten anything impure or unclean."
The voice spoke to him a second time, "Do not call anything impure that God has made clean."
Acts 10.11-15