What does 2 Chronicles 36:23 mean?

Cyrus said, 'The God who rules the skies has given me every kingdom on earth, and he’s told me to build him a house in Jerusalem, in Judah. If you belong to his people, you can go up to Jerusalem.' 2 Chronicles 36:23 - Modern Text Bible

(Cyrus credits his power to Israel’s God and gives a direct order: the Jews are free to return and rebuild their temple. This is a huge reversal of their exile.)