He that sounded the trumpet was by me To give the alarm, and call the people together, when and where it was necessary. It appears by this he was continually with them while they wrought upon the wall.
Related Commentaries of Nehemiah 4:18
Nehemiah 4:18
18 For the builders, every one had his sword girded by his side,e and so builded. And he that sounded the trumpet was by me.