It is His in a particular and peculiar sense, and it exalts Him to a rank and dignity above that of all created beings, whether in Heaven or on earth. An exalted position. Nothing demonstrates the exalted state of the Son more than that the angels have been placed under a divine fiat to bow the knee, or prostrate themselves, before Jesus as their sovereign. The expression of adoration and the recognition of reverence demonstrate the subjection of the angels, while proving the superior dignity of the Son. The lesser worships the greater.
Angels are spirits, serving the bidding of the monarch of the universe.
The throne is the symbol of rule. It indicates a reign over a dominion. In this case the dominion includes the whole created spectrum of which the angels are a part. A scepter was generally a rod or wand held in the hand of a king while administering the affairs of government. It was a badge of authority and a visible symbol of the power vested in the one who held it.