6. Chap. V.

Observe now to which of these three classes the first question in your letter is to be referred. You ask, "What ought to be done on the Thursday of the last week of Lent? Ought we to offer the sacrifice in the morning, and again after supper, on account of the words in the Gospel, Likewise also . . . after supper'? ¹ Or ought we to fast and offer the sacrifice only after supper? Or ought we to fast until the offering has been made, and then take supper as we are accustomed to do?" I answer, therefore, that if the authority of Scripture has decided which of these methods is right, there is no room for doubting that we should do according to that which is written; and our discussion must be occupied with a question, not of duty, but of interpretation as to the meaning of the divine institution. In like manner, if the universal Church follows any one of these methods, there is no room for doubt as to our duty; for it would be the height of arrogant madness to discuss whether or not we should comply with it. But the question which you propose is not decided either by Scripture or by universal practice. It must therefore be referred to the third class--as pertaining, namely, to things which are different in different places and countries. Let every man, therefore, conform himself to the usage prevailing in the Church to which he may come. For none of these methods is contrary to the Christian faith or the interests of morality, as favoured by the adoption of one custom more than the other. If this were the case, that either the faith or sound morality were at stake, it would be necessary either to change what was done amiss, or to appoint the doing of what had been neglected. But mere change of custom, even though it may be of advantage in some respects, unsettles men by reason of the novelty: therefore, if it brings no advantage, it does much harm by unprofitably disturbing the Church.