[Sidenote: _Industrial Training_] The pupils of these schools sustained themselves by their own labor in tilling the soil, or in some mechanical employment. In Israel this was not thought strange or degrading; indeed, it was regarded as a sin to allow children to grow up in ignorance of useful labor. Every youth, whether his parents were rich or poor, was taught some trade. Even though he was to be educated for holy office, a knowledge of practical life was regarded as essential to the greatest usefulness. Many also of the teachers supported themselves by manual labor. [Sidenote: _Course of Study_] In both the school and the home much of the teaching was oral; but the youth also learned to read the Hebrew writings, and the parchment rolls of the Old Testament Scriptures were open to their study. The chief subjects of study in these schools were the law of God, with the instruction given to Moses, sacred history, sacred music, and poetry. In the records of sacred history were traced the footsteps of Jehovah. The great truths set forth by the types in the service of the sanctuary were brought to view, and faith grasped the central object of all that system,—the Lamb of God, that was to take away the sin of the world. A spirit of devotion was cherished. Not only were the students taught the duty of prayer, but they were taught how to pray, how to approach their Creator, how to exercise faith in Him, and how to understand and obey the teachings of His Spirit. Sanctified intellect brought forth from the treasure-house of God things new and old, and the Spirit of God was manifested in prophecy and sacred song. [Sidenote: _Results_] These schools proved to be one of the means most effective in promoting that righteousness which “exalteth a nation.”[49] In not small degree they aided in laying the foundation of that marvelous prosperity which distinguished the reigns of David and Solomon. [Sidenote: _David and Solomon_] The principles taught in the schools of the prophets were the same that moulded David’s character and shaped his life. The word of God was his instructor. “Through Thy precepts,” he said, “I get understanding.... I have inclined mine heart to perform Thy statutes.”[50] It was this that caused the Lord to pronounce David, when in his youth He called him to the throne, “a man after Mine own heart.”[51] In the early life of Solomon also are seen the results of God’s method of education. Solomon in his youth made David’s choice his own. Above every earthly good he asked of God a wise and understanding heart. And the Lord gave him not only that which he sought, but that also for which he had not sought,—both riches and honor. The power of his understanding, the extent of his knowledge, the glory of his reign, became the wonder of the world. [Sidenote: _Greatness of Israel_]