1. Christ, the priest who rose according to the order of Melchizedek because perfection was not through the Levitical priesthood (Heb 7:11-17)
    Heb 8:7-13, Heb 10:1, Heb 5:5-6, Heb 7:28, Heb 9:9-12, Heb 7:24-25,

We could not attain perfection through the priesthood of the tribe of Levi. Jesus, of the tribe of Judah, has become the eternal priest who perfects us forever according to the order of Melchizedek. (Heb 7:11-17, Heb 5:5-6, Heb 7:24-25,28)

Heb 7:11 If therefore perfection were by the Levitical priesthood, (for under it the people received the law,) what further need was there that another priest should rise after the order of Melchisedec, and not be called after the order of Aaron?
12 For the priesthood being changed, there is made of necessity a change also of the law.
13 For he of whom these things are spoken pertaineth to another tribe, of which no man gave attendance at the altar.
14 For it is evident that our Lord sprang out of Juda; of which tribe Moses spake nothing concerning priesthood.
15 And it is yet far more evident: for that after the similitude of Melchisedec there ariseth another priest,
16 Who is made, not after the law of a carnal commandment, but after the power of an endless life.
17 For he testifieth, Thou art a priest for ever after the order of Melchisedec.

Heb 5:5 So also Christ glorified not himself to be made an high priest; but he that said unto him, Thou art my Son, to day have I begotten thee.
6 As he saith also in another place, Thou art a priest for ever after the order of Melchisedec.

Heb 7:24 But this man, because he continueth ever, hath an unchangeable priesthood.
25 Wherefore he is able also to save them to the uttermost that come unto God by him, seeing he ever liveth to make intercession for them.
28 For the law maketh men high priests which have infirmity; but the word of the oath, which was since the law, maketh the Son, who is consecrated for evermore.

The law given through Moses, God’s first covenant, is not perfect. This law will become obsolete and perish. But Christ, God’s new covenant, is without blemish, completely solves our sins, and is with us forever. (Heb 8:7-13)

Heb 8:7 For if that first covenant had been faultless, then should no place have been sought for the second.
8 For finding fault with them, he saith, Behold, the days come, saith the Lord, when I will make a new covenant with the house of Israel and with the house of Judah:
9 Not according to the covenant that I made with their fathers in the day when I took them by the hand to lead them out of the land of Egypt; because they continued not in my covenant, and I regarded them not, saith the Lord.
10 For this is the covenant that I will make with the house of Israel after those days, saith the Lord; I will put my laws into their mind, and write them in their hearts: and I will be to them a God, and they shall be to me a people:
11 And they shall not teach every man his neighbour, and every man his brother, saying, Know the Lord: for all shall know me, from the least to the greatest.
12 For I will be merciful to their unrighteousness, and their sins and their iniquities will I remember no more.
13 In that he saith, A new covenant, he hath made the first old. Now that which decayeth and waxeth old is ready to vanish away.

The Old Testament law is a shadow of the coming Christ. The law is our ordinance until Christ comes. Now Christ has come to take away our sins once and for all. (Heb 10:1, Heb 9:9-12)

Heb 10:1 For the law having a shadow of good things to come, and not the very image of the things, can never with those sacrifices which they offered year by year continually make the comers thereunto perfect.

Heb 9:9 Which was a figure for the time then present, in which were offered both gifts and sacrifices, that could not make him that did the service perfect, as pertaining to the conscience;
10 Which stood only in meats and drinks, and divers washings, and carnal ordinances, imposed on them until the time of reformation.
11 But Christ being come an high priest of good things to come, by a greater and more perfect tabernacle, not made with hands, that is to say, not of this building;
12 Neither by the blood of goats and calves, but by his own blood he entered in once into the holy place, having obtained eternal redemption for us.