I am the LORD, and there is none else, there is no God beside me: I girded thee, though thou hast not known me:
5. I am Jehovah. He confirms the preceding statement, and the repetition is not superfluous; for it was proper that it should be often repeated to Cyrus, that there is one God, by whose hands all rulers and nations are governed, that he might be drawn aside from all delusions and be converted to the God of Israel.
The Lord proclaims with sovereign majesty that He alone is God, infinite and eternal; all others set up against Him are counterfeits and lies. He orders light and darkness, peace and punishment, all things, so let no man who rises to power forget he remains merely mortal, and there is no God but one.
AI summary
Commenting on Isaiah 45:5-10
I am the Lord, and there is none else,.... Whom thou, O Cyrus, for the words are directed to him, ought to own, serve, and worship: there is no God besides me; in heaven or earth, in any of the countries conquered by thee, and thou rulest over; for though there were gods and lords many, so called, these were only nominal fictitious deities; not...