Many have argued over just who Melchizedek was. Was he a real historical person, like Noah’s son Shem? Was he an angel, or some superhuman being? Was he an appearance of Christ prior to his coming to earth as the Son of God? The Apostle Paul in the book of Hebrews, chapter 7, helps his readers to see that Melchizedek was a type of Christ, and Christ was a priest and kind in the manner of Melchizedek.
Melchizedek was a real historical person, who was born and died. However, the account can be used to highlight features of similarity by the greater Melchizedek, Jesus Christ. The Melchizedek account does not mention his mother and father, not his descendant, or the birth or death, it is simply left out. Accordingly, Melchizedek could aptly foreshadow Jesus Christ, who has an unending priesthood. Jesus had no predecessor or successor to his priesthood. Moreover, Jesus Priesthood and Kingship are not the results of human ancestors, but by being appointed by the Father.