Thematic Bible: Peter's vision of the ceremonially unclean creatures

And he became hungry and wanted to eat. But [while] they were preparing [the food], a trance came over him. And he saw heaven opened and an object something like a large sheet coming down, being let down to the earth by its four corners, in which were all the four-footed animals and reptiles of the earth and birds of the sky. read more.
And a voice came to him, "Get up, Peter, slaughter and eat!" But Peter said, "Certainly not, Lord! For I have never eaten anything common and unclean!" And the voice [came] again to him for the second time: "[The things] which God has made clean, you must not consider unclean!" And this happened three times, and immediately the object was taken up into heaven.