I am editing this post to expand a bit. Previously I had said Melchisedec did not matter, that being for the purposes of this discussion. From Hebrews 7:
This Melchisedec, king of Salem, priest of the most high God, who met Abraham returning from the slaughter of the kings, and blessed him; to whom also Abraham gave a tenth part of all; first being by interpretation King of righteousness, and after that also King of Salem, which is, King of peace; without father, without mother, without descent, having neither beginning of days, nor end of life; but made like unto the Son of God; abideth a priest continually. Now consider how great this man was, unto whom even the patriarch Abraham gave the tenth of the spoils. And verily they that are of the sons of Levi, who receive the office of the priesthood, have a commandment to take tithes of the people according to the law, that is, of their brethren, though they come out of the loins of Abraham: but he whose descent is not counted from them received tithes of Abraham, and blessed him that had the promises. And without all contradiction the less is blessed of the better. And here men that die receive tithes; but there he receiveth them, of whom it is witnessed that he liveth. And as I may so say, Levi also, who receiveth tithes, payed tithes in Abraham. For he was yet in the loins of his father, when Melchisedec met him."
This would be at least in part why Reformation denominations do not refer to their leaders as Priests. Christ is Priest after the order of Melchisedec. Some say Melchisedec is Christ. Whatever Melchisedec is (essentially I am trying to avoid that discussion, it is best treated in another thread), he is unbegun and undying. There are few persons that fit that bill. Only three that I know of. Melchisedec blesses Abraham, and in Abraham Levi is blessed. Levi in the person of John the Baptist baptizes (blesses, anoints) Jesus and marks the beginning of Christ's active public ministry. Melchisedec comes before Sinai, and it is clear here that the eventual authority of the Levitical Priesthood arises from the blessing of Melchisedec and from the bowing of Abraham before Melchisedec in the form of tithing.
Tithing by the way is a mark of the Priesthood. This would be a supporting argument made by some as to why we do not tithe. There is no priesthood.
Melchisedec marks the beginning of the investment of Godly authority to be used by men in worship in human beings. Melchisedec-Abraham-Levi. Sinai marks the formal beginning of men in worship as authorities as a specific group. From Sinai onward, such authority is passed man to man.
So to continue, it goes Melchisedec-Abraham-Levi-John the Baptist-Jesus Christ-The Apostles.
The Apostles RULE over the churches. All of them. There is no other example that any have brought me. Apostles appoint local body authorities. Those authorities in that local body select from among themselves those that fit the qualifications. Why ELSE would you give the locals those qualifications found in Timothy?
Why? Because your DESIGNATED authorities will now choose FUTURE authorities.
Break the chain and you've broken the chain. That's all there is to it.
Melchisedec was and was not important to this discussion. I answered first that he did not matter because I didn't have the time to deal with the whole issue, but now I do, sitting here in Laredo with no load and nothing to do.
Melchisedec didn't matter for comparison purposes because he was before Sinai. He does matter because he is one of those ultimate authorities. The King of Peace (Salem) who is also Priest of Salem gives our High Priest and our King authority by placing it in Abraham, who passes it to Levi (with God's blessing) and later to David (Kings were not desired by God, but he did establish them). Jesus is King (the son of David) and Jesus is High Priest, after the Order of Melchisedec. He recovers this role from the human beings he vested that authority in years ago. Jesus, as King and High Priest appoints through his Apostles, lesser apostles, those that rule the churches and then bestows on them in Timothy the direction to choose their own. When did this change?
How WOULD you know that your "apostle" had been chosen properly unless he was chosen by one chosen properly and so forth back to Christ?
The answer is, if you don't know, you'd better find out.
If you can't point to that line, then it doesn't exist.