Zephaniah 3:14

In view of these wonderful prospects, Zephaniah called the people of Jerusalem and all the Israelites to shout for joy with all their hearts.

"Although the command is aimed at the future Jerusalem, no doubt the message would not be lost on the godly worshipers of Zephaniah’s own day." [Note: Patterson, p. 377.]

The phrase "daughter of" is a way of referring to the citizens of Zion (Jerusalem) as the children of the city. Children born in any city are the children of that city in a metaphorical sense as well as the children of their physical parents in a literal sense. Elsewhere, "daughters of Jerusalem" sometimes refers to the villages surrounding Jerusalem, those little communities that Jerusalem spawned.