Thus in labor and in giving they were taught to co-operate with God and with one another. And they were to co-operate also in the preparation of the spiritual building—God’s temple in the soul. [Sidenote: _Organization_] From the outset of the journey from Egypt, lessons had been given for their training and discipline. Even before they left Egypt a temporary organization had been effected, and the people were arranged in companies, under appointed leaders. At Sinai the arrangements for organization were completed. The order so strikingly displayed in all the works of God was manifest in the Hebrew economy. God was the center of authority and government. Moses, as His representative, was to administer the laws in His name. Then came the council of seventy, then the priests and the princes, under these “captains over thousands, and captains over hundreds, and captains over fifties, and captains over tens,”[37] and, lastly, officers appointed for special duties. The camp was arranged in exact order, the tabernacle, the abiding-place of God, in the midst, and around it the tents of the priests and the Levites. Outside of these, each tribe encamped beside its own standard. [Sidenote: _Sanitary Regulations_] Thorough-going sanitary regulations were enforced. These were enjoined on the people, not only as necessary to health, but as the condition of retaining among them the presence of the Holy One. By divine authority Moses declared to them, “The Lord thy God walketh in the midst of thy camp, to deliver thee; ... therefore shall thy camp be holy.”[38] [Sidenote: _Diet_] The education of the Israelites included all their habits of life. Everything that concerned their well-being was the subject of divine solicitude, and came within the province of divine law. Even in providing their food, God sought their highest good. The manna with which He fed them in the wilderness was of a nature to promote physical, mental, and moral strength. Though so many of them rebelled against the restriction of their diet, and longed to return to the days when, they said, “We sat by the flesh-pots, and when we did eat bread to the full,”[39] yet the wisdom of God’s choice for them was vindicated in a manner they could not gainsay. Notwithstanding the hardships of their wilderness life, there was not a feeble one in all their tribes. [Sidenote: _The Divine Guiding_] In all their journeyings the ark containing the law of God was to lead the way. The place of their encampment was indicated by the descent of the pillar of cloud. As long as the cloud rested over the tabernacle, they remained in camp. When it lifted, they pursued their journey. Both the halt and the departure were marked by a solemn invocation. “It came to pass, when the ark set forward, that Moses said, Rise up, Lord, and let Thine enemies be scattered.... And when it rested, he said, Return, O Lord, unto the many thousands of Israel.”[40] [Sidenote: _Music and Song_]