The guru's business is to see that no human being suffers in this material world. We may then ask why the living entity is suffering. The answer is: out of ignorance. He does not think, "I am committing mistakes and am leading a sinful life; that is why I am suffering." Therefore the guru's first business is to rescue his disciple from this ignorance. We send our children to school to save them from suffering. If our children do not receive an education, we fear that they will suffer in the future. The guru sees that suffering is due to ignorance, which is compared to darkness. How can one in darkness be saved? By light. The guru takes the torchlight of knowledge and presents it before the living entity enveloped in darkness. That knowledge relieves him from the sufferings of the darkness of ignorance...