Constitutions of the Holy Apostles Book V Do ye who are able fast the day of the preparation and the Sabbath-day entirely, tasting nothing till the cock-crowing of the night; but if any one is not able to join them both together, at least let him observe the Sabbath-day; for the Lord says somewhere, speaking of Himself: "When the bridegroom shall be taken away from them, in those days shall they fast."[147]