Charles H. Spurgeon on Psalms 110:4

The form and manner of our Saviour's investiture or consecration was most honourable and glorious, God the Father performing the rites; which were not imposition of hands, and breathing on him the Holy Ghost, but a solemn testimony, with a protestation, "Thou art a priest": ceremonies never used by any but God, nor in the investiture of any but Christ, nor in his investiture into any office but the priesthood. At his coronation we hear nothing, but the Lord said, "Sit thou on my right hand": the rule of the whole world is imposed upon our Saviour by command; and even in this did Christ show his obedience to his Father, that he took upon him the government of his church. But at the consecration of Christ we have a great deal more of ceremony and solemnity, God his Father taketh an oath, and particularly expresses the nature and condition of his office, a priesthood for ever after the order of Melchizedek: and he confirmeth it unto him for ever, saying, "Thou art a priest for ever." —Daniel Featley, in "Claris Mystica." 1636.