DAY 359 CHALLENGE “Why do Catholics worship on Sunday instead of keeping the Sabbath? The (Saturday) Sabbath is part of the Ten Commandments, which Catholics recognize as expressing the moral law (CCC 1962).” DEFENSE The Sabbath command is unique among the Ten Commandments in that it incorporates both moral and ceremonial aspects. The Catechism of Trent states: The other commandments of the Decalogue are precepts of the natural law, obligatory at all times and unalterable. Hence, after the abrogation of the Law of Moses, all the commandments contained in the [Ten Commandments] are ob…