Nehemiah 4:20

16 And from that day on, half of my servants did the work while the other half held spears, shields, bows, and armor. The officers stationed themselves behind all the people of Judah

17 who were rebuilding the wall. The laborers who carried materials worked with one hand and held a weapon with the other.

18 And each of the builders worked with his sword strapped at his side. But the trumpeter stayed beside me.

19 Then I said to the nobles, the officials, and the rest of the people: “The work is great and extensive, and we are spread out far from one another along the wall.

20 Wherever you hear the sound of the horn, rally to us there. Our God will fight for us!”

21 So we continued the work, while half of the men held spears from the break of dawn until the stars came out.

22 At that time I also said to the people, “Let every man and his servant spend the night inside Jerusalem, so that they can stand guard by night and work by day.”

23 So neither I nor my brothers nor my servants nor the guards with me changed out of our clothes; each carried his weapon, even to go for water.

Read all of Nehemiah 4