What does the Bible say about the priesthood of Jesus?

According to Scripture, Jesus is established as our high priest forever, as detailed in Hebrews 7:22. His priesthood is unchanging, unlike the Levitical priesthood, because He lives eternally and continuously intercedes for His people (Hebrews 7:25). This is crucial as it signifies the fulfillment of the Old Testament sacrificial system with Christ's once-for-all sacrifice, offering complete redemption and perfecting those who are sanctified (Hebrews 10:14). His eternal priesthood assures us that our salvation is secure and effective, relying solely on His merit before God.