1 Corinthians 6:13

Meats] An instance of things indifferent: cp. 1 Corinthians 8-10, where this matter is treated at length. St. Paul grants liberty in respect of meats; but the liberty does not excuse violating another man's conscience or becoming a slave to gluttony. Now the body is not, etc.] The Corinthians regarded the use of food and fornication as exactly on the same level, as both satisfying appetites: they held that the existence of bodily appetites justified their gratification. St. Paul, on the contrary, draws a sharp line of distinction between these two things.