Hebrews 7  Pressing on, past the elementary principals of the gospel, includes this fuller understanding of Who Christ really is, ".. a priest forever according to the order of Melchizedek". 

Melchizedek is a bit of a mystery.  We know that he is called the king of Salem, the king of peace, and the "king of righteousness".  He was a "priest of the Most High God".   He met Abraham after he fought the kings that had come against him.  Abraham recognized him as someone greater than himself and offered him a tenth of the spoils.. a tithe.  We are told that his man had no genealogy, no mother or father.  He had no beginning and no end, " but make like the Son of God, he abides a priest perpetually." 

The writer tells us that this order of priesthood is greater than the order of Aaron.
 The levitical priesthood is tied to the law of Moses.
The Melchizedek priesthood is tied to a different law.

The levitical priesthood depended on a physical requirement - they had to be a descendent of Aaron. But the Melchizedek priest is "according to the power of an indestructible life." 

The levitical priesthood involves commandments that make nothing perfect.  It is weak and useless and therefore set aside.
The Melchizedek priesthood involves a "better hope through which we draw near to God". 

The levitical priesthood required no oath.
The Melchizedek priesthood was ordained by God Himself who vowed with an oath ," The Lord has sworn and will not change His mind, Thou art a priest forever"

The levitical priesthood consisted of many men, constantly replaced as they died and their descendants took over.
The Melchizedek priesthood is permanent, "He abides forever" and "He is able to save forever those who draw near to God through Him, since He always lives to make intercession for them". 

The levitical priests had to offer daily sacrifices for themselves as well as the sins of the people.
The One who is our Great High Priest is "holy, innocent, undefiled, separated from sinners and exalted above the heavens.."  He does not have to offer up any sacrifices for Himself.  He does not need to offer anymore sacrifices for the people, " because this He did once for all when He offered up Himself." 

The levitical priests appointed by the Law are weak.
"But the word of the oath, which came after the Law, appoints a Son, made perfect forever." 

Praise to our God and Father, merciful and mighty!  You have given to us a perfect high priest, Jesus Christ, Who has saved us and makes intercession for us always. Your love for us is revealed in the Truth of the gospel, the good news, of our Redeemer and King.  He is the King of Righteousness and the King of Peace.  He is the Perfect Son and the Great High Priest... forever.  Open up our understanding of the riches of these truths. Overwhelm us with the greatness of Your Majesty and power. We our so thankful for Your Word and Your Spirit, who leads us near to You through Jesus.
Amen and amen.