John Chrysostom : What is "To do Thy will"? To give up, Myself, He means: This is the will of God. "By which Will we are sanctified." Or he even means something still further, that the sacrifices do not make men clean, but the Will of God. Therefore to offer sacrifice is not the will of God. And why dost thou wonder that it is not the will of God now, when it was not His will even from the beginning? For "who," saith He, "hath required this at your hands?" (Isa. i. 12.) How then did He Himself enjoin it? In condescension. For as Paul says, "I would that all men were even as I myself" (1 Cor. vii. 7), in respect of continence, and again says, "I will that the younger women marry, bear children" (1 Tim. v. 14); and lays down two wills, yet the two are not his own, although he commands; but the one indeed is his own, and therefore he lays it down without reasons; while the other is not his own, though he wishes it, and therefore it is added with a reason. For having previously accused them, because "they had waxed wanton against Christ" (1 Tim. v. 11), he then says, "I will that the younger women marry, bear children." (1 Tim. v. 14.) So in this place also it was not His leading will that the sacrifices should be offered. For, as He says, "I wish not the death of the sinner, as that he should turn unto [Me] and live" (Ezek. xxxiii. 11): and in another place He says that He not only wished, but even desired this: and yet these are contrary to each other: for intense wishing is desire. How then dost Thou "not wish"? how dost Thou in another place "desire," which is a sign of vehement wishing? So is it in this case also. "By the which will we are sanctified," he says. How sanctified? "by the offering of the Body of Jesus Christ once for all." — Homily on Hebrews 18 Oecumenius : "we have been sanctified." By which will, he says, you are sanctified. Of which? Of the cross, through the offering of the body of Jesus Christ. For we have not only obtained forgiveness, but we have also been sanctified. "the offering of the body of Jesus Christ." Behold, he has interpreted what the will of the Father is; the offering of the body of Christ. For since he was speaking above and below about the will, he then said what the will is. "Once," he says, that is, not in the manner of the Jewish sacrifices, but once. "Once, indeed." The offering of the body of Jesus Christonce for all.That is, those who are sanctified through the once-for-all offering of the body of Jesus Christ. — The Pseudo-Oecumenian Catena on Hebrews Theodoret of Cyrus : He brought out clearly that God's will is the salvation of humankind. The Lord also said as much, "This is the will of my Father, that everyone who believes in me may not be lost but may have eternal life." — INTERPRETATION OF Hebrews 10