At present everyone is suffering due to ignorance, just as one contracts a disease out of ignorance. If one does not know hygienic principles, he will not know what will contaminate him. Therefore due to ignorance there is infection, and we suffer from disease.
A criminal may say, “I did not know the law,” but he will not be excused if he commits a crime. Ignorance is no excuse. Similarly, a child, not knowing that fire will burn, will touch the fire. The fire does not think, “This is a child, and he does not know I will burn.” No, there is no excuse. Just as there are state laws, there are also stringent laws of nature, and these laws will act despite our ignorance of them. If we do something wrong out of ignorance, we must suffer. This is the law. Whether the law is a state law or a law of nature, we risk suffering if we break it.
The guru’s business is to see that no human being suffers in this material world. No one can claim that he is not suffering. That is not possible. In this material world, there are three kinds of suffering. These are miseries arising from the material body and mind, from other living entities, and from the forces of nature.
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.
Ref: Chapter 2a, Science of Self Realization authored by Srila Prabhupada (Founder – Acharya, ISKCON)