Nehemiah 4:16-18

16After that day, half of my men continued to do the work on the wall. The other half carried spears, shields and bows. They also wore armour. The officers stood behind the people while they built the wall.

17The men who were carrying materials held them with one hand. They held a weapon in their other hand.

18All of the builders had swords tied on their belts while they were building. There was a man who would make a sound with his trumpet if there was danger. He stayed near me.