I’ve been wondering where Ezra was. He arrives once the temple is complete. He is the high priest. He brings other musicians and priests with him. He has been in Babylon, and is s great scholar. He knows all of the Jewish culture.
He brings with him a wonderful supportive letter from the king making it clear that it is to be done right in every detail and empowering him to fully re-establish the Jewish religious practices.
The letter seems to have a thread of shared monotheism. There also seems to be a hedging-your-bets element to it, avoiding the wrath of God just in case it’s true.
Whatever, god has clearly been at work in this situation, Ezra is the right man for the right moment.