A note on the kingship of Jesus from the Puritan Thomas Watson.
‘Jesus Christ is of mighty renown, he is a king;
1. He has a kingly title. ‘High and Lofty.’ Isa 57:15.
2. He has his insignia regalia, his ensigns of royalty; corona est insigne regae potestatis [a crown is the symbol of royal power]. He has his crown; Rev 6:2; his sword, ‘Gird thy sword upon thy thigh;’ Psa 45:3; his sceptre, ‘A sceptre of righteousness is the sceptre of thy kingdom.’ Heb 1:8.
3. He has his escutcheon, or coat of armour; he inserts the lion in his coat of arms. ‘The lion of the tribe of Judah.’ Rev 5:5. The text says ‘he is King of kings.’ He has a pre-eminence of all other kings, and is called, ‘The Prince of the kings of the earth.’ Rev 1:5. He must needs be so, for ‘by him kings reign.’ Prov 8:15. They hold their crowns by immediate tenure from this great King. Christ infinitely outvies all other princes; he has the highest throne, the largest dominions, and the longest possession. ‘Thy throne, O God, is for ever and ever.’ Heb 1:8. He has many heirs, but no successors. Well may he be called ‘King of kings,’ for he has an unlimited power. The power of other kings is limited, but Christ’s power is unlimited. ‘Whatsoever he pleased, that did he, in heaven and earth, and in the seas.’ Psa 135:6. Christ’s power is as large as his will. The angels take the oath of allegiance to him. ‘Let all the angels of God worship him.’ Heb 1:6.’
(Thomas Watson, A Body of Divinity)