Nehemiah 4:16-18

16And it came to pass from that time forth, that the half of my servants wrought in the work, and the other half of them held both the spears, the shields, and the bows, and the coats of mail; and the rulers were behind all the house of Judah. 17They who built on the wall, and they that bore burdens, burdened themselves, every one with one of his hands wrought in the work, and with the other hand held a weapon. 18For the builders, every one had his sword girded by his side, and so built. And he that sounded the trumpet was by me.1