Jesus Christ is the High Priest of the temple that is central to the worship of God. As we are in Him, we become part of His priesthood, sharing in His work even now, without waiting for the resurrection. Since He is the High Priest, His responsibilities become our responsibilities, uniting us in purpose with Him. In the vision of Revelation 5:9-10, it is shown that God has made us kings and priests to our God, preparing us to reign on the earth under Jesus Christ. The role of the High Priest, exemplified by figures like Melchizedek in Genesis 14:18-19, who blessed Abraham and conferred good upon him, highlights the significance of this office. Melchizedek, described as both king of Salem and priest of the Most High God, sets a precedent for the dual authority and spiritual influence that Jesus Christ embodies as our High Priest. Historically, high priests like Eleazar in Joshua 14:1 were directly involved in significant national decisions, such as the division of land, demonstrating their influential role alongside leaders like Joshua. The priesthood, from its early roots in Genesis 4 with Cain and Abel's offerings to the structured system under Moses in Exodus 25:40, reflects a divine pattern established by God, underscoring the importance of the High Priest's role in representing Him and guiding His people.

The role of the High Priest is central to understanding the responsibilities and holiness required in serving God. Aaron was appointed by God as the first High Priest, as seen in Exodus 28:1-2, where God instructed Moses to take Aaron and his sons to minister as priests. This divine calling is affirmed in Hebrews 5:1 and 5:4, emphasizing that no man takes this honor upon himself but must be called by God, just as Aaron was. The High Priest, along with other priests, acted as intermediaries between God and the people, representing men before God in matters of worship and sacrifice, as they were personally cut off from direct access to Him. The High Priest's office was marked by strict requirements for holiness, reflecting God's own nature. Leviticus 21:10-15 details specific regulations for the High Priest, including prohibitions against defiling himself by contact with the dead, even for close relatives, and restrictions on marriage to ensure purity of lineage. He was to remain ceremonially clean to perform his duties, and any physical defect or temporary defilement disqualified him from service until resolved, as outlined in Leviticus 21:16-23. These stringent standards underscored the necessity for the High Priest to mirror God's perfection and holiness. Under the Old Covenant, the High Priest's role was limited by human frailty and mortality, as highlighted in Hebrews 7:22-24. Unlike Jesus Christ, who holds an unchangeable priesthood and continues forever, the Aaronic High Priests were subject to death, with only one occupying the position at a time, always a descendant of Aaron. Historical accounts note 80 High Priests from Aaron to the time of Christ, showing the variability in the quality of those who served, in contrast to Christ's eternal and perfect priesthood. The High Priest's life was hedged with restrictions to maintain a state of holiness, serving as a living reminder to the nation of their call to be holy as God is holy. This responsibility extended beyond the individual to impact the entire community, emphasizing the sacred nature of the office. Under the New Covenant, believers are called to a royal priesthood, serving under our High Priest, the Lord Jesus Christ, with an expectation to reflect His holiness in an intimate association with the Father, the Son, and each other.