“For thus says the Lord God: Behold, I will bring against Tyre from the north Nebuchadnezzar king of Babylon, king of kings, with horses and chariots, and with horsemen and a host of many soldiers.” (Ezekiel 26:7, ESV)

I love the comment of the Orthodox Study Bible here: “Nebuchadnezzar may be king of kings, but Jesus Christ is KING OF KINGS (Rev 19:16).”

Then I saw heaven opened, and behold, a white horse! The one sitting on it is called Faithful and True, and in righteousness he judges and makes war…On his robe and on his thigh he has a name written, King of kings and Lord of lords.” (Revelation 19:11,16, ESV)

Jesus is the true King of all Kings.