Why is Christ as our high priest important?

The significance of Christ as our high priest lies in His unique position as the mediator between God and humanity. Unlike the Aaronic priests, who performed repeated sacrifices, Christ offered Himself once for all, fulfilling the sacrificial system of the Old Testament. His priesthood is established with an oath from God, indicating its permanence and efficacy. As a result, believers now have unhindered access to God, as symbolized by the tearing of the temple veil at Christ's death. We are also called to serve as a royal priesthood, offering our lives to God, enabled by Christ's finished work.