Whether the third precept of the decalogue, concerning the hallowing of the Sabbath, is fittingly expressed?

Objections

Objection 1 : It seems that the third precept of the decalogue, concerning the hallowing of the Sabbath, is unfittingly expressed. For this, understood spiritually, is a general precept: since Bede in commenting on Lk. 13:14, "The ruler of the synagogue being angry that He had healed on the Sabbath," says (Comment. iv): "The Law forbids, not to heal man on the Sabbath, but to do servile works," i.e. "to burden oneself with sin." Taken literally it is a ceremonial precept, for it is written (Ex. 31:13): "See that you keep My Sabbath: because it is a sign between Me and you in your generations." Now the precepts of the decalogue are both spiritual and moral. Therefore it is unfittingly placed among the precepts of the decalogue.
Objection 2 : Further, the ceremonial precepts of the Law contain "sacred things, sacrifices, sacraments and observances," as stated above (FS, Question [101], Article [4]). Now sacred things comprised not only sacred days, but also sacred places and sacred vessels, and so on. Moreover, there were many sacred days other than the Sabbath. Therefore it was unfitting to omit all other ceremonial observances and to mention only that of the Sabbath.
Objection 3 : Further, whoever breaks a precept of the decalogue, sins. But in the Old Law some who broke the observances of the Sabbath did not sin---for instance, those who circumcised their sons on the eighth day, and the priests who worked in the temple on the Sabbath. Also Elias (3 Kgs. 19), who journeyed for forty days unto the mount of God, Horeb, must have traveled on a Sabbath: the priests also who carried the ark of the Lord for seven days, as related in Josue 7, must be understood to have carried it on a Sabbath. Again it is written (Lk. 13:15): "Doth not every one of you on the Sabbath day loose his ox or his ass . . . and lead them to water?" Therefore it is unfittingly placed among the precepts of the decalogue.
Objection 4 : Further, the precepts of the decalogue have to be observed also under the New Law. Yet in the New Law this precept is not observed, neither in the point of the Sabbath day, nor as to the Lord's day, on which men cook their food, travel, fish, and do many like things. Therefore the precept of the observance of the Sabbath is unfittingly expressed.