Whether it is right to distinguish other moral precepts of the law besides the decalogue?

❌ Objection 1 : It would seem that it is wrong to distinguish other moral precepts of the law besides the decalogue. Because, as Our Lord declared (Mt. 22:40), "on these two commandments" of charity "dependeth the whole law and the prophets." But these two commandments are explained by the ten commandments of the decalogue. Therefore there is no need for other moral precepts.

❌ Objection 2 : Further, the moral precepts are distinct from the judicial and ceremonial precepts, as stated above (Question [99], Articles [3],4). But the determinations of the general moral precepts belong to the judicial and ceremonial precepts: and the general moral precepts are contained in the decalogue, or are even presupposed to the decalogue, as stated above (Article [3]). Therefore it was unsuitable to lay down other moral precepts besides the decalogue.

❌ Objection 3 : Further, the moral precepts are about the acts of all the virtues, as stated above (Article [2]). Therefore, as the Law contains, besides the decalogue, moral precepts pertaining to religion, liberality, mercy, and chastity; so there should have been added some precepts pertaining to the other virtues, for instance, fortitude, sobriety, and so forth. And yet such is not the case. It is therefore unbecoming to distinguish other moral precepts in the Law besides those of the decalogue.