Nehemiah 4:19-21

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. 21So we laboured in the work: and half of them held the spears from the rising of the morning till the stars appeared.