Captivity in Babylon gives way to release and return to the homeland. Such was the experience that the writer, maybe Ezra, thought that it seemed like a happy dream. Though it was a literal experience, yet it also describes a future redemption that the Messiah would effect for the church. We were also chain-bound captives, but Christ has delivered us from our prison. He has translated us from the kingdom of darkness into the kingdom of light, and it is no dream!
Mourning is turned into laughing, and silence into singing. Unless there is a sowing in intercessory prayer, or preaching the word in and out of season, there will be no fruit nor joy. It is tears that water the good soil, and consequently there will be results with the labourers weighed down with blessed spiritual produce. There shall be a harvest.