What does the Bible say about Jesus being a priest?

Jesus is presented in the Scriptures as the ultimate high priest, a fulfillment of the Old Testament priesthood that was established with Aaron and the Levitical order. Unlike the Levitical priests who made repeated sacrifices for the atonement of sins, Jesus offered Himself once for all as the perfect sacrifice. This is reflected in passages such as Hebrews 5:10, which identifies Him as a priest forever after the order of Melchizedek. In Psalm 21:6, we see that He is 'set to be a blessing forever,' indicating His role in interceding for His people and securing eternal redemption.