Hebrews 10:14

“For by one offering, etc..] The same as before; himself, body and soul; this is a reason why he is set down, and will continue so for ever, and why he expects his enemies to be made his footstool; because by one sacrifice for sin, which he has once offered, he hath perfected for ever them that are sanctified; that is, who are sanctified by God the Father, (<650101>Jude 1:1) or, who are set apart by him in eternal election, from the rest of the world, for his own use, service, and glory, to a state of grace and holiness here, and happiness hereafter; for this is not to be understood either of their being sanctified in Christ, though the Syriac version reads, “that are sanctified” in him, or…”

“For--The sacrifice being "for ever" in its efficacy (Heb 10:12) needs no renewal. them that are sanctified--rather as Greek, "them that are being sanctified." The sanctification (consecration to God) of the elect (Pe1 1:2) believers is perfect in Christ once for all (see on Heb 10:10). (Contrast the law, Heb 7:19; Heb 9:9; Heb 10:1). The development of that sanctification is progressive.”

“For by one offering - By offering himself once on the cross. The Jewish priest offered his sacrifices often, and still they did not avail to put away sin; the Saviour made one sacrifice, and it was sufficient for the sins of the world. He hath perfected forever - He hath laid the foundation of the eternal perfection. The offering is of such a character that it secures their final freedom from sin, and will make them forever holy. It cannot mean that those for whom he died are made at once perfectly holy, for that is not true; but the idea is, that the offering was complete, and did not need to be repeated; and that it was of such a nature as entirely to remove the penalty due to sin, and to…”

“He hath perfected them for ever - That is, has done all that was needful in order to their full reconciliation with God. Hebrews 10:15”

“10:14 made perfect: See study notes on 7:11, 28. • those who are being made holy: What the author has in mind is complete purification from sins.”

“he: Heb 10:1, Heb 7:19, Heb 7:25, Heb 9:10, Heb 9:14 them: Heb 2:11, Heb 6:13, Heb 6:14, Heb 13:12; Act 20:32, Act 26:13; Rom 15:16; Co1 1:2; Eph 5:26; Jde 1:1 Hebrews 10:15”