1 Corinthians 10:25-28

Whatsoever is sold in the shambles, that eat, asking no question for conscience sake: for the earth is the Lord's, and the fulness thereof. If any of them that believe not bid you to a feast, and ye be disposed to go; whatsoever is set before you, eat, asking no question for conscience sake. But if any man say unto you, This is offered in sacrifice unto idols, eat not for his sake that shewed it, and for conscience sake: for the earth is the Lord's, and the fulness thereof