Nehemiah 4:18-20 (King James Version)

 ¹⁸For the builders, every one had his sword girded by his side, and so builded. And he that sounded the trumpet was by me.

 ¹⁹And I said unto the nobles, and to the rulers, and to the rest of the people, The work is great and large, and we are separated upon the wall, one far from another.

 ²⁰In what place therefore ye hear the sound of the trumpet, resort ye thither unto us: our God shall fight for us.