Nehemiah 4:18-22

As for the builders, each wore his sword strapped to his waist as he built, while the trumpeter stood near me.

And I 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.

At whatever place you hear the sound of the trumpet, assemble to us there. Our God will fight for us.”

So we carried on the work with half of them holding spears from dawn until the stars appeared.

At that time I also said to the people, “Each man with his servant shall spend the night within Jerusalem, so that they may be a guard for us by night and a laborer by day.”