CHRIST, NOT SOLOMON.
This psalm seems to refer to the Lord Jesus, not to Solomon, as Jews claim: even if under pressure they transfer most of the content to Solomon for being expressed in human fashion, yet the verse Your throne, O God, is forever and ever, the rod of your kingship a rod of equity completely shuts their mouth, since Solomon was not called God and did not reign forever. Instead, Christ alone as God also adopted the human condition for our sake and, being God and king forever, also retained his own status by nature. If, however, most of the things it mentions are human, that is no surprise, since in becoming human he accepted also commendation for his humanity. After all, if he accepted suffering as a human being, much more also commendation as a human being, no harm transferring to his divine nature.
Commentary on Psalms 45