In Acts 10:9-15, we read the story of Peters vision. In this vision, heaven was opened up to him. From out of his heavens descended a vessel like a sheet held together by its four corners. In it, were all kinds of animals, reptiles and birds. The voice of God came to him and said, "Rise, Peter; kill, and eat." But Peter said, "Not so, Lord; for I have never eaten anything that is common or unclean." The voice came again and said, "What God hath cleansed, that call not thou common."