What happens after death?
One who has taken his birth is sure to die, and after death one is sure to take birth again. Therefore, in the unavoidable discharge of your duty, you should not lament. (Bhagavad-Gita—-2:27—-translation)Yamaraja, the great controller of life after death, decides the living entities’ destinies in their next lives. He is surely among the most confidential representatives of the Lord. Such confidential posts are offered to great devotees of the Lord who are as good as His eternal associates in the spiritual sky. (Srimad Bhagavatam—-3:5:21—-purport).
Unfortunately people do not know that there is life after death; therefore mundane people waste their time amassing material profit which has to be left behind at the time of death. Such profit has no eternal benefit. Similarly, adoration by mundane people is valueless because after death one has to accept another body. Material adoration and titles are decorations that cannot be carried over to the next body. In the next life, everything is forgotten. (Sri Caitanya Caritamrta—-2:19:159—-purport).
Just as the most sinful wretch lives in a ghostly body after death and moves about in the ether, having been denied a gross body, so the impersonalist, although rising to the point of liberation in the transcendental position, falls back down to the material world because of not having developed the mood of loving service to the Supreme Lord. Therefore the severe austerities and penances the impersonalist performs are not equivalent to the eternal religion of devotional service. (Renunciation Through Wisdom).
In this life, an envious person commits violent acts against many living entities. Therefore after his death, when he is taken to hell by Yamaraja, those living entities who were hurt by him appear as animals called rurus to inflict very severe pain upon him. Learned scholars call this hell Raurava. Not generally seen in this world, the ruru is more envious than a snake. (Srimad Bhagavatam—-5:26:11—-translation).