Melchizedek and Levi
From Dictionary.com Noun, Origin of priest, Middle English -prest, Old English – prēost, Late Latin - presbyter 1. a person whose office it is to perform religious rites, and especially to make sacrificial offerings. 2. a person ordained to the sacerdotal or pastoral office; a member of the clergy; minister. (in hierarchical churches) a member of the clergy of the order next below that of bishop, authorized to carry out the Christian ministry. 3. a minister of any religion. 4. to ordain as a priest. (verb (used with object)
Genesis 14:18-20 Melchizedek, king of Salem,* brought out bread and wine. He was a priest of God Most High. He blessed Abram with these words: “Blessed be Abram by God Most High, the creator of heaven and earth; And blessed be God Most High, who delivered your foes into your hand.”Then Abram gave him a tenth of everything.
A priest is one who offers sacrifice, and Melchizadeck offered “bread” and “wine” and he was the king of Salem, ancient Jerusalem. He pre-dates the Levitical priesthood from Aaron’s line by about years. Some commentators suggest that the Biblical Narrative suggests that Melchizadeck may be the character Shem, the son of Noah from the pre-historical accounts in the first 11 chapters of Genesis.
There is an excellent article on the Priesthood from In one sense there is only one priest and that is Jesus Christ who is priest, prophet and king. All baptized Christians participate in a very real way in this priesthood. Henri de Lubac wrote a great book, The Splendor of the Church, an I think he makes a very good distinction between the priesthood of the baptized and the ministerial priesthood. All the baptized reveal this reality internally, while the ordained reveal it in a more external way.
There are Bishops (episkopos), priests (presbyteros), and deacons (diakonos) in the New Testament. The elders (episkopos and presbyteros) role to bind and loose: Matthew 16:19; 18:18, and John 20:19 Also Jesus sets the apostles apart to forgive sins in the upper room, see John 20:19 One can see the development of this organizational structure in the pastoral epistles.
To Preach: The priest is tasked with sharing the kerygma, the central message of Christ’s salvation To Sanctify: the presbyter’s role is to administer the sacraments, especially the Sacrifice of the Mass and Reconciliation. To Govern: The presbyter assists the bishop in the care and administration of the church at the local level, the respective parishes.