Christ - Our Source of Eternal Salvation

6 As He said also in another place (Ps. 110:4), You are a Priest forever after the order of Melchisedec. (This is the distinguishing characteristic of this order of Priesthood, and proclaims it as an Eternal One.)
7 Who in the days of His flesh (proclaims the Incarnation of Christ), when He had offered up prayers and supplications with strong crying and tears unto Him (presents the prayer-life of the Master) Who was able to save Him from death (presents the prayer for Resurrection), and was heard (proclaims the fact that God heard and answered His Prayer) in that He feared (the picture in the word “feared” is that of a cautious taking hold of, and a careful and respectful handling; it is Christ taking into account all things, not only His Own desire, but the Will of the Father);
8 Though He were a Son (stresses Deity, but at the same time the role of Christ as “Son of Man”), yet learned He obedience (doesn’t mean He had to learn to obey, for that would mean He had sinned; it means He actively sought out the path of obedience, and then unfailingly walked therein) by the things which He suffered (concerned the entire course of His Life, but more so the Cross);
9 And being made perfect (refers to being brought to the goal fixed by God, which had to be if He was to be the Perfect Sacrifice), He became the Author of Eternal Salvation (proclaims a perfect Salvation, because He was and is the Perfect Redeemer, because He was the Perfect Sacrifice) unto all them who obey Him (we obey Him by exhibiting Faith in the Cross, which then gives the Holy Spirit latitude to work; this Truth was given to Paul [Rom. 6:3–5, 11, 14; Gal. 1:11–12]);
10 Called of God an High Priest (the Title is conferred on Him by God the Father) after the order of Melchisedec. (Christ was not to be a great High Priest merely for the Jews, but for the Gentiles as well; in order for this to be, His Priesthood would have to rest in something other than the Levitical Order; being after the Order of Melchisedec satisfied both demands, because Melchisedec preceded Israel as a people [Gen. 14:18–20; Ps. 110:4].)

Swaggart, J. (2005). The Expositor’s Study Bible (pp. 2124–2125). Jimmy Swaggart Ministries.