Matthew Poole and continuators on Hebrews 5:9

9 And being made perfect , he became the author of eternal salvation unto all them that obey him .

As to the powerful Execution of his Office, this God-Man exceed's his Types; for having consummated all the Work to which he was designed dy his doing, suffering, dying, rising, and ascending into Heaven in the human Nature, he perfected the Work of Redemption, and consecrated himself to his Office.

By this was he constituted, made, and declared by his Father to be, not an Instrument as all his Types were, but the Cause efficient meritorious and exemplar of Salvation, by his Sacrifice satisfying God's Justice, meriting and effecting Reconciliation and Justification for Sinners; and on his Ascension sends forth the Holy Ghost to qualifie them for the Reception of his Benefits, by working in them what he requires, and on their Application to him, he, as their High Priest, pleads the Merit of his Blood, and intercedes for their Justification and Salvation, which is the freeing them from all Evil criminal and penal, Sin, and whatever it subjecteth them to in this World, or that which is to come; and instating them into all the heavenly Priviledges promised in the Covenant of Grace, Righteousness, Holiness, Heirship to, and Life and Glory with God, and to be safe in the Possession of them all, not for Time only, but for Eternity. This efficient Cause produceth this only to the duly qualified Subject: Mankind is rendred salvable by the Obedience and Sacrifice of this High-Priest; but it is only to penitent believing Sinners that he doth communicate this, and for whom he effects it; those who will intirely submit themselves to Christ as a Lord and King, and be loyal to him and obey him, as well as to a Priest or a Saviour, continuing his faithful Subjects to the end, Iohn 3.16, 18, 36. comp. Matth. 10.22.

Marginal references: Chap. 2.10.