Heb 9:25

“"Nor yet that He should offer Himself often, as the High Priest entereth into the Holy place every year with blood of others." Seest Thou how many are the differences? The "often" for the "once"; "the blood of others," for "His own." Great is the distance. He is Himself then both victim and Priest and sacrifice. For if it had not been so, and it had been necessary to offer many sacrifices, He must have been many times crucified. "For then," he says, "He must often have suffered since the foundation of the world."”

“Nor yet that he should offer himself often - The sacrifice of Christ is not like that of the Jewish high priest; his must be offered every year, Christ has offered himself once for all: and this sacrificial act has ever the same efficacy, his crucified body being still a powerful and infinitely meritorious sacrifice before the throne.”

“Should offer himself, &c. He takes notice that Christ, by virtue of his sacrifice, and his dying once on the cross, satisfied for the sins of all men that ever were from the beginning of the world. It was decreed from eternity that the Son of God should come to redeem mankind: the ransom that was not yet paid was accepted; and all might be saved who believed in their Redeemer, who was to come, and who, by the graces that God offered and gave them, lived well. (Witham) — Christ shall never more offer himself in sacrifice, in that violent, painful, and bloody manner, nor can there be any occasion for it; since by that one sacrifice upon the cross, he has furnished the full ransom, redemption, and remedy for all the sins of the world. But this hinders not that he may offer himself in the sacred mysteries in an unbloody manner, for the daily application of that one sacrifice of redemption to our souls. (Challoner)”

“As in Heb 9:24, Paul said, it was not into the typical, but the true sanctuary, that Christ is entered; so now he says, that His sacrifice needs not, as the Levitical sacrifices did, to be repeated. Construe, "Nor yet did He enter for this purpose that He may offer Himself often," that is, "present Himself in the presence of God, as the high priest does (Paul uses the present tense, as the legal service was then existing), year by year, on the day of atonement, entering the Holy of Holies. with--literally, "in." blood of others--not his own, as Christ did.”