Acts 10:12-15

and it contained all kinds of four-footed animals and crawling creatures of the earth and birds of the air. A voice came to him, “Get up, Peter, kill and eat!” But Peter said, “Not at all, Lord, for I have never eaten anything that is common (unholy) and [ceremonially] unclean.” And the voice came to him a second time, “What God has cleansed and pronounced clean, no longer consider common (unholy).”