'King of Kings' in the Bible

Artaxerxes, king of kings, to Ezra the priest, the scribe of the law of the God of heaven, perfect and so forth.

For thus says the Lord Yahweh: Behold, I will bring on Tyre Nebuchadnezzar king of Babylon, king of kings, from the north, with horses, and with chariots, and with horsemen, and a company, and many people.

You, O king, are king of kings, to whom the God of heaven has given the kingdom, the power, and the strength, and the glory;

which in its own times he will show, who is the blessed and only Ruler, the King of kings, and Lord of lords;

These will war against the Lamb, and the Lamb will overcome them, for he is Lord of lords, and King of kings. They also will overcome who are with him, called and chosen and faithful."

He has on his garment and on his thigh a name written, "KING OF KINGS, AND LORD OF LORDS."