What does the Bible say about Jesus being a High Priest?

Jesus is portrayed as a High Priest in the book of Hebrews, particularly in Hebrews 7, which cites Psalms 110:4. This psalm establishes that God has sworn Jesus as a priest forever, distinguishing Him from earthly priests who were temporary and mortal. Unlike them, Jesus has an unchangeable priesthood because He does not die and is eternally able to intercede on behalf of His people. His priesthood is superior, as He did not enter the holy place with the blood of animals but offered His own blood to atone for sin once and for all, thereby securing eternal redemption.