The concept of Jesus Christ as the eternal and unchangeable priest is a central theme in Christian theology, particularly emphasized in the New Testament book of Hebrews. This priesthood is distinct from the Levitical priesthood of the Old Testament, being both superior and everlasting.

Biblical Foundation

The foundation for understanding Jesus' eternal priesthood is found in the order of Melchizedek, a mysterious figure who appears in Genesis 14:18-20. Melchizedek, the king of Salem and priest of God Most High, blesses Abram and receives tithes from him. This encounter prefigures the unique priesthood of Christ, as noted in Psalm 110:4: "The LORD has sworn and will not change His mind: 'You are a priest forever in the order of Melchizedek.'"

The Epistle to the Hebrews elaborates on this theme, presenting Jesus as the fulfillment of this ancient priestly order. Hebrews 5:6, quoting Psalm 110, affirms, "And in another passage God says: 'You are a priest forever in the order of Melchizedek.'" This eternal priesthood is not based on ancestry or the law but on the power of an indestructible life (Hebrews 7:16).

Superiority to the Levitical Priesthood

The priesthood of Jesus is superior to the Levitical priesthood in several ways. Firstly, it is eternal. Hebrews 7:23-24 states, "Now there have been many other priests, since death prevented them from continuing in office. But because Jesus lives forever, He has a permanent priesthood." Unlike the Levitical priests who were subject to death, Jesus' priesthood is unending.

Secondly, Jesus' priesthood is unchangeable and perfect. Hebrews 7:26-27 describes Him as "holy, innocent, undefiled, set apart from sinners, and exalted above the heavens. Unlike the other high priests, He does not need to offer daily sacrifices, first for His own sins and then for the sins of the people. He sacrificed for sin once for all when He offered up Himself."

Mediator of a New Covenant

Jesus, as the eternal high priest, is also the mediator of a new and better covenant. Hebrews 8:6 states, "But now Jesus has received a more excellent ministry, just as the covenant He mediates is better and is founded on better promises." This new covenant, prophesied in Jeremiah 31:31-34, is characterized by an internal transformation and a direct relationship with God, made possible through the sacrificial death and resurrection of Christ.

Intercessory Role

The intercessory role of Jesus as high priest is a source of comfort and assurance for believers. Hebrews 7:25 declares, "Therefore He is able to save completely those who draw near to God through Him, since He always lives to intercede for them." This ongoing intercession underscores the personal and perpetual nature of Christ's priestly ministry.

Conclusion

The eternal and unchangeable priesthood of Jesus is a cornerstone of Christian faith, offering believers a perfect mediator who provides access to God, ensures the forgiveness of sins, and guarantees eternal salvation. Through His unique priesthood, Jesus fulfills the promises of the Old Testament and establishes a new covenant, inviting all to partake in the grace and mercy of God.