Hebrews 7
Melchizedek—king of righteousness, king of peace, without genealogy, without beginning of days or end of life, resembling the Son of God—functions as OT type for Christ's eternal priesthood, his mysterious pre-incarnate appearance in Genesis 14 interpreted as Christophany. Abraham tithing to Melchizedek establishes Melchizedek's superiority to Abraham and therefore to Levi descended from Abraham's loins, reversing the hierarchy of Jacob's blessing where Judah receives prominence, instead subordinating the Levitical order to the Melchizedekian priesthood. The change of priesthood from Levitical to Melchizedekian requires a change of law since the priesthood is the foundation of the Torah, Hebrews boldly claiming that Christ's priesthood supersedes Mosaic legislation itself. Jesus' priesthood held permanently (aparabaton—not passed to another, not shared)—a single eternal priesthood replacing the repeated succession of mortal priests—establishes the finality and unrepeatable singularity of Christ's priestly work. The assertion that Christ is holy, innocent, unstained, separated from sinners, and exalted above the heavens establishes his transcendent virtue as prerequisite for efficacious intercession, his sinlessness making him the perfect victim and perpetual intercessor. He is able to save to the uttermost (panteles—completely, to the end) those who draw near to God through him—an absolute claim to Christ's sufficiency for all believers, past, present, and future, making his redemptive work eternally efficacious.