Nehemiah 4:19-21

19I said to the leaders, the officers and all the people, ‘It is hard work and the wall is very long. So we are not working near to each other.

20When you hear the sound of the trumpet, come to join us here. Our God will fight on our behalf.’

21We continued to work on the wall every day, from dawn until it became dark. Half of the men held spears to be our guards.