His arrangements for the military protection of Jerusalem converted the whole city into an armed camp. Half the citizens in turn were to leave their work, and stand at arms with swords and spears and bows. Even in the midst of the building operations the clatter of weapons was heard among the stones, because the masons at work on the walls and the labourers while they poised on their heads baskets full of rubbish from the excavations had swords attached to their sashes. Residents of the suburbs were required to stay in the city instead of returning home for the night, and no man could put off a single article of clothing when he lay down to sleep. Nor was this martial array deemed sufficient without some special provision against a surprise. Nehemiah therefore went about with a trumpeter, ready to summon all hands to any point of danger on the first alarm. Still, though the Jews were hampered with these preparations for battle, tired with toil and watching, and troubled by dreadful apprehensions, the work went on. This is a great proof of the excellency of Nehemiah's generalship. He did not sacrifice the building to the fighting. The former was itself designed to produce a permanent defence, while the arms were only for temporary use. When the walls were up the citizens could give the laugh back to their foes. But in itself the very act of working was reassuring. Idleness is a prey to fears which industry has no time to entertain. Every man who tries to do his duty as a servant of God is unconsciously building a wall about himself that will be his shelter in the hour of peril. CHAPTER XXII. _USURY._ NEHEMIAH v.