'Joyfully' in the Bible

Rejoice and shout for joy, O inhabitant of Zion,For great in your midst is the Holy One of Israel.

O my threshed people [Judah, who must be judged and trampled down by Babylon], my afflicted of the threshing floor.What I have heard from the Lord of hosts,The God of Israel, I have [joyfully] announced to you [that Babylon is to fall].

You meet him who rejoices in doing that which is morally right,Who remembers You in Your ways.Indeed, You were angry, for we sinned;We have long continued in our sins [prolonging Your anger].And shall we be saved [under such circumstances]?