Whether the New Law made sufficient ordinations about external acts?

❌ Objection 1 : It would seem that the New Law made insufficient ordinations about external acts. Because faith that worketh through charity seems chiefly to belong to the New Law, according to Gal. 5:6: "In Christ Jesus neither circumcision availeth anything, nor uncircumcision: but faith that worketh through charity." But the New Law declared explicitly certain points of faith which were not set forth explicitly in the Old Law; for instance, belief in the Trinity. Therefore it should also have added certain outward moral deeds, which were not fixed in the Old Law.

❌ Objection 2 : Further, in the Old Law not only were sacraments instituted, but also certain sacred things, as stated above (Question [101], Article [4]; Question [102], Article [4]). But in the New Law, although certain sacraments are instituted by Our Lord; for instance, pertaining either to the sanctification of a temple or of the vessels, or to the celebration of some particular feast. Therefore the New Law made insufficient ordinations about external matters.

❌ Objection 3 : Further, in the Old Law, just as there were certain observances pertaining to God's ministers, so also were there certain observances pertaining to the people: as was stated above when we were treating of the ceremonial of the Old Law (Question [101], Article [4]; Question [102], Article [6]). Now in the New Law certain observances seem to have been prescribed to the ministers of God; as may be gathered from Mt. 10:9: "Do not possess gold, nor silver, nor money in your purses," nor other things which are mentioned here and Lk. 9,10. Therefore certain observances pertaining to the faithful should also have been instituted in the New Law.

❌ Objection 4 : Further, in the Old Law, besides moral and ceremonial precepts, there were certain judicial precepts. But in the New Law there are no judicial precepts. Therefore the New Law made insufficient ordinations about external works.