If any of them that believe not.... — How should a Christian act if a heathen friend invited him to a feast? Should he inquire whether there was any sacrificial meat at the feast, and so avoid eating it? No. The same principle applies here — no question need be asked.
Related Commentaries of 1 Corinthians 10:27
1 Corinthians 10:27
27 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.