Hebrews 5:10 - Joseph Benson’s Commentary on the Old and New Testaments

Called Προσαγορευθεις, denominated by God himself, or, as some understand the expression, openly declared, namely, in the 110th Psalm, before referred to; a high-priest after the order of Melchisedec Or, according to the constitution of Melchisedec's priesthood, which was a figure and example of Christ's priesthood, in the peculiar properties and circumstances of it, namely, not by a material unction, legal ceremonies, or any human ordination, but by a heavenly institution, and the immediate unction of the divine Spirit. The Holy Ghost seems to have concealed who Melchisedec was, on purpose that he might be the more eminent type of Christ. This only we know, that he was a priest, and the king of Salem, or Jerusalem.