Whether the Old Law contains moral precepts?

❌ Objection 1 : It would seem that the Old Law contains no moral precepts. For the Old Law is distinct from the law of nature, as stated above (Question [91], Articles [4],5; Question [98], Article [5]). But the moral precepts belong to the law of nature. Therefore they do not belong to the Old Law.

❌ Objection 2 : Further, the Divine Law should have come to man's assistance where human reason fails him: as is evident in regard to things that are of faith, which are above reason. But man's reason seems to suffice for the moral precepts. Therefore the moral precepts do not belong to the Old Law, which is a Divine law.

❌ Objection 3 : Further, the Old Law is said to be "the letter that killeth" (2 Cor. 3:6). But the moral precepts do not kill, but quicken, according to Ps. 118:93: "Thy justifications I will never forget, for by them Thou hast given me life." Therefore the moral precepts do not belong to the Old Law.