Why is Christ's role as High Priest important for Christians?

In His role as High Priest, Christ fulfills the requirements of the Old Testament sacrificial system, but unlike the priests of Aaron, who offered sacrifices repeatedly, Jesus offers Himself as the perfect and final sacrifice for sins. This establishes a new covenant between God and His people, assuring believers that their sins are atoned for once and for all (Hebrews 10:10). Furthermore, His ongoing intercession, as seen in John 17, provides comfort and assurance of His presence and advocacy before the Father. As the High Priest, Christ's work guarantees the spiritual security of the elect and underscores the depth of His love, drawing believers to a closer relationship with God.