Dhruva Maharaja came to the forest to search out the Supreme Personality of Godhead with a revenging spirit against his stepmother. His stepmother had insulted Dhruva, who was not an ordinary person, but a great Vaisnava. An offense at the lotus feet of a Vaisnava is the greatest offense in this world. Because of having insulted Dhruva Maharaja, Suruci would become mad upon the death of her son and would enter a forest fire, and thus her life would be ended. This was specifically mentioned by the Lord to Dhruva because he was determined for revenge against her. From this we should take the lesson that we should never try to insult a Vaisnava. Not only should we not insult a Vaisnava, but we should not insult anyone unnecessarily. When Suruci insulted Dhruva Maharaja, he was just a child. She of course did not know that Dhruva was a great recognized Vaisnava, and so her offense was committed unknowingly. When one serves a Vaisnava unknowingly, one still gets the good result, and if one unknowingly insults a Vaisnava, one suffers the bad result. A Vaisnava is especially favored by the Supreme Personality of Godhead. Pleasing him or displeasing him directly affects the pleasure and displeasure of the Supreme Lord. Srila Visvanatha Cakravarti Thakura, in his eight stanzas of prayer to the spiritual master, has sung, yasya prasadad bhagavat-prasadah: by pleasing the spiritual master, who is a pure Vaisnava, one pleases the Personality of Godhead, but if one displeases the spiritual master one does not know where he is going.