Whether Christ's Passion operated by way of sacrifice?

❌ Objection 1 : It would seem that Christ's Passion did not operate by way of sacrifice. For the truth should correspond with the figure. But human flesh was never offered up in the sacrifices of the Old Law, which were figures of Christ: nay, such sacrifices were reputed as impious, according to Ps. 105:38: "And they shed innocent blood: the blood of their sons and of their daughters, which they sacrificed to the idols of Chanaan." It seems therefore that Christ's Passion cannot be called a sacrifice.

❌ Objection 2 : Further, Augustine says (De Civ. Dei x) that "a visible sacrifice is a sacrament---that is, a sacred sign---of an invisible sacrifice." Now Christ's Passion is not a sign, but rather the thing signified by other signs. Therefore it seems that Christ's Passion is not a sacrifice.

❌ Objection 3 : Further, whoever offers sacrifice performs some sacred rite, as the very word "sacrifice" shows. But those men who slew Christ did not perform any sacred act, but rather wrought a great wrong. Therefore Christ's Passion was rather a malefice than a sacrifice.