"Fear the fire, which is prepared for the disbelievers."
[Ali'-Imran, 3: 131]
"Truly Hell is lying in wait- a destination for the transgressors." (One's rejection of faith is transgression against Allah and himself).
[an-Naba, 78: 21-22]
Abdullah bin Umar (radiAllahu anhu) narrated: "Allah Messenger (salAllahu alayhi wasalam) said, 'When someone dies, he is shown his destination morning and evening and if he belongs to the people of Paradise, (he will be shown his place) among the people of Paradise, and if he is from the people of Hell, (he will be shown his place) among the people of Hell.'"
Abu Hurairah (radiAllahu anhu) reported that Allah's Messenger (salAllahu alayhi wasalam) said: "There was a dispute between Hell and Paradise during which Hell said, 'The haughty and the proud will find abode in me.' And Paradise said, 'The meek and the humble will find their abode in me.' Thereupon, Allah, the Exalted and Glorious, (addressing Hell) said, 'You are the means of My punishment by which I punish those of My servants whom I wish.' (and addressing Paradise), He said, 'You are My mercy by means of which I will show mercy to those whom I wish. And each one of you will be full.'"