Bitachon 259 - Singing Before Salvation

We study together chapter 20 of Divrei Hayamim II which speaks of the miraculous salvation that King Yehoshaphat and the Jewish people experienced when Amon, Moav and Amalek sought to fight a great battle with them. They prayed for salvation and also sang before the salvation even came. At the time of their singing, their enemies were miraculously vanquished.