I understand that the Kufr (dis-believers) will be thrown into the hellfire. But I have one question; why will Allah torture them for an eternity if he is merciful? Eternal torture in the hell fire will last for thousands of years and beyond...that is a very long time, why will Allah torture them for so long? I know there people who have done many bad things in this world and deserve the torture, but an eternity is an insanely long time for someone to endure. Islam is a peaceful religion but why should people endure such extreme and long amounts of torture?