Chapters 5 thru 8 of Hebrews do a complicated piece of bible study based on Exodus 28 and Psalm 50. The writer theorises that Jesus followed the pattern of the mysterious figure Melchizedek. Without beginning or end, Jesus takes the place of the high priest who officiated in the Jerusalem Temple in a new temple in the heavens. The theology is complicated and somewhat non-Pauline. Would Paul have talked of Jesus "learning obedience" or entering the Holy of Holies?