Nehemiah 4:16-18

16From that day forward, half of my men were doing the work and half of them were taking up spears, shields, bows, and body armor. Now the officers were behind all the people of Judah

17who were rebuilding the wall. Those who were carrying loads did so by keeping one hand on the work and the other on their weapon.

18The builders to a man had their swords strapped to their sides while they were building. But the trumpeter remained with me.