Hebrews 5:6

Hebrews 5:6 says, As he saith also in another place, Thou art a priest for ever after the order of Melchisedec.  We do not know a lot about Melchisedec, except that he was not of the order of priests who were descendants of Aaron and was noted for his faithfulness to God.  Matthew Henry says, "God the Father appointed him a priest of a higher order than that of Aaron. The priesthood of Aaron was to be but temporary; the priesthood of Christ was to be perpetual: the priesthood of Aaron was to be successive, descending from the fathers to the children; the priesthood of Christ, after the order of Melchisedec, was to be personal, and the high priest immortal as to his office, without descent, having neither beginning of days nor end of life, as it is more largely described in the seventh chapter, and will be opened there."  Though we do not know that much about Melchisedec, we do know that Christ is our spiritual high Priest, and that He is indeed eternal, appointed by the Father.  Verse seven adds, Who in the days of his flesh, when he had offered up prayers and supplications with strong crying and tears unto him that was able to save him from death, and was heard in that he feared;  This verse refers to Jesus and His unique qualification to be our high Priest.  Jesus did come in the flesh, making Himself subject to all the weaknesses and temptations that every person is subjected to.  I will say once more, if Christ was not truly human and subjected to the same weaknesses and temptations that everyone else is, then He cannot serve as our example.  If He did not have the ability to give in to temptation and sin, then He could not have fulfilled the Law.  He is the eternal Savior, appointed by the Father.  Jesus offered strong prayers to His heavenly Father that if there were another way that He might not have to face a cruel death on the cross.  God could have spared His only begotten Son, but He would have doomed all people in doing so.  Verse eight continues, Though he were a Son, yet learned he obedience by the things which he suffered;  Jesus learned obedience to the Father through His sufferings.  We are called to be like Christ, so if we do suffer because of our faith, we must be obedient to God, even in our suffering.  Verse nine states, And being made perfect, he became the author of eternal salvation unto all them that obey him;  Christ was born in perfection, but it was His faithfulness to the heavenly Father in life, even during suffering, that kept Him perfect.  Remaining perfect, Christ became the author of eternal salvation.  Only if Christ were truly human could He fulfill this requirement.  If He was unable to sin if He so chose to do so, then His life was simply for show.  Verse ten adds, Called of God an high priest after the order of Melchisedec.  Christ, like Melchisedec, is our high Priest not by physical qualifications, but by spiritual qualifications.