Nehemiah 4:18-20

18As for the builders, each wore his sword girded at his side as he built, while 1the trumpeter stood near me. 19I said to the nobles, the officials and the rest of the people, “The work is great and extensive, and we are separated on the wall far from one another. 20At whatever place you hear the sound of the trumpet, 2rally to us there. 3Our God will fight for us.”