Bhakat Prahlad

Many years ago there was a king of devils named Hiranayakashyap.He devoted hard for lord Brahama be a powerful king of earth. Lord Brahama was pleased with his devotion and asked him for wish.He wished that:
He could neither be killed by any human nor by animal,nor by weapon.
Neither he could be killed inside the home nor outside.
Neither he could be killed in a day nor in night.
Neither he could be killed on earth nor in sky.
Lord Brahama gave him these powers. After gaining these powers he assumed himself immortal such that now he couldn't be killed by anyone on this earth.He started criticising people to accept him as God and devoted for him.People who didn't follow him were killed by his army men.Everyone was in pain now.He destroyed all temples of Hindus and was building temples with his sculpture.It was intolerable by people but they were helpless.
After some wife of Hiranayakashyap gave birth to a boy whose name was given Prahlad.Prahlad was devotee of Lord Vishnu from his birth.He kept reciting for Hari Vishnu all times .His father did n't like that all people in his kingdom worshipped for him but his own son was against him .He sent him in a school to learn his name but in school Prahlad made others to worship for Lord Vishnu .His father got angry and decided to kill his son.
He tried to throw him from a hill,kill him by an elephant,by giving him poison but everytime Hari Vishnu saved him. After this Hiranayakashyap called her sister Holika to burn Prahald in fire but the result was opposite Holika wa burnt in fire and Prahlad was saved.

All of these incidents couldn't bear by Hiranayakashyap and in aggression he threw him in courtyard and this time Lord Vishnu came in form of Narasimha. Lord vishnu was very angry with this devil that he took him in his arms and sat down in the middle of doors.Hiranaya told Lord Vishnu that he couldn't kill him because he had the powers that he couldn't be killed by any human or animal.Lord said him that look he was neither a human nor animal .Half of his body was of human and head of Lion.Hiranaya told still he could n't kill him because he could n't be killed in day or in night then narsimha said that look it was nor a day nor night it was the evening time.Again Hiranaya said but still he could n't kill him because he couldn't be killed on the earth or sky then narsimha told he was not on earth or sky he was in the lap of Narsimha .Then Lord Vishnu had killed him by his nails.Lord Vishnu was still very angry such that no one was trying to make him calm then Prahlad requested to be calm.Lord Vishnu was very happy with his devotee Prahlad and sat him in his lap.
People in Hiranaya's kingdom celebrated this occasion.Everyone was happy now.
Conclusion:In nature everybody who criticises others results criticism back to him like an example of Hiranayakashyap.