The words bala adusita-dhiyah indicate that the children, being of a tender age, were not as polluted by materialistic life as their fathers. Prahlada Maharaja, therefore, taking advantage of the innocence of his class friends, began teaching them about the importance of spiritual life and the insignificance of materialistic life. Although the teachers Sanda and Amarka were instructing all the boys in the materialistic life of religion, economic development and sense gratification, the boys were not much polluted. Therefore, with great attention they wanted to hear from Prahlada Maharaja about Krsna consciousness. In our Krsna consciousness movement, the guru-kula plays an extremely important part in our activities because right from childhood the boys at the guru-kula are instructed about Krsna consciousness. Thus they become steady within the cores of their hearts, and there is very little possibility that they will be conquered by the modes of material nature when they are older.