Although it was the clouds that gave the signal for taking down and pitching tents, still they always awaited the word of Moses. Before starting the pillar of cloud would contract and stand still before Moses, waiting for him to say: "Rise up, Lord, and let Thine enemies be scattered; and let them that hate Thee flee before Thee," whereupon the pillar of cloud would be set in motion. It was the same when they pitched camp. The pillar of cloud would contract and stand still before Moses, waiting for him to say: "Return, O Lord, unto the many thousands of Israel," whereupon it would expand first over the tribes that belonged to the standard of Judah, and then over the sanctuary, within and without. [444] THE CAMP The camp was in the form of a square, twelve thousand cubits on each side, and in the middle was the space, four thousand cubits in size, for the sanctuary, and the dwelling place of priests and Levites. In the East of the sanctuary lived Moses, Aaron, and Aaron's sons; the Levites of the family of Kohath lived in the South, the sons of Gershon in the West, and the sons of Merari in the North. Each of theses divisions had for its dwelling place a space of a hundred cubits, while each group of three tribes that joined under one standard had a space of four thousand cubits. This was only for the dwelling place of the people, the cattle were outside the encampment, and the cloud of glory separated the dwelling places of the human beings from those of the animals. Rivers surrounded the camp from without, and so also were the different groups separated one from the other by rivers. But in order that on the Sabbath, when riding was prohibited, intercourse among the different parts of the camp might not be rendered impossible, there were bridges of boards over the rivers. The purple color of the cloud of glory was reflected in the waters of the rivers, so that it spread afar a radiance like that of the sun and the stars. The heathens, whenever they beheld these wondrous radiant waters, were frightened and feared Israel, but at the same time praised God for the miracles He wrought for Israel. [445] These were miracles that were visible to the outer world as well, but there were others that were known to Israel alone. During their forty years' march they had no need of change of raiment. The robe of purple which the angels clothed each one among them at their exodus from Egypt remained ever new; and as a snail's shell grows with it, so did their garments grow with them. Fire could not injure these garments, and though they wore the same things throughout forty years, still they were not annoyed by vermin, yes, even the corpses of this generation were spared by worms. [446]