In Hebrews 7 the author returns to the central theological idea of the letter, that Jesus Christ is our eternal High Priest. In order to draw out the full significance of Jesus’ unique priesthood, he exposits Psalm 110:4, where a King is foretold who will also hold the office of a Priest, like Melchizedek. The author exalts the priesthood of Jesus by expounding first how Melchizedek is greater than the Levitical priesthood of the Old Testament, and second how Jesus is the greatest Melchizedekian priest.