The fourth avatar of Lord Vishnu was the Narsimha avatar who came on Earth to save Prahlad, his devotee, and end the torment of Hiranyakashipu, a demon King. According to scriptures, legends, and beliefs, Hiranyakashipu was a demon ruler who had the boon that he won’t be killed by any man, God, or even animal, and thus he began to think highly of himself. He instructed everyone to worship him, and not the Gods, and only he was truly immortal. But his anger did not work in front of his son Prahlad who worshiped Lord Vishnu with all his heart. And so, Hiranyakashipu tried to kill his own son, Prahlad, and just before he could do so, Lord Vishnu took the form of Narsimha, half man and half lion, and with his powerful grip ended Hiranyakashipu’s reign.