The Qur’an speaks at length of the evil deeds for which those who will abide in the Hell forever deserve their never-ending fate. Here we will mention the most serious of them.
(1) Kufr and Shirk: Allah (swt) tells us that it will be said to those who disbelieved, when they are in the Fire, that Allah’s hatred of them will be greater than their own hatred towards themselves because of their disbelief. Then He explains that their eternal fate in Hell is because of their kufr and shirk:
“The unbelievers will be addressed: “Greater was the aversion of Allah to you than [is] your aversion to yourselves, seeing that you were called to the Faith but you used to refuse. They will say, “Our Rabb! Twice have You made us without life, and twice have You given us life! Now have we recognized our sins: is there any way out [of this]?” [The answer will be]: “This is because, when Allah was invoked as the Only [object of worship] you did reject Faith, but when partners were joined to Him, you believed! The Command is only with Allah, All-High, All-Great!” (40:10-12)
Allah (swt) tells us that the keeper of Hell will ask the kuffaar as they are approaching Hell:
“Did there not come to you your messengers with clear signs?” (40:50)
The response will be that they deserved Hell because they disbelieved in the Messengers and their Message:
“They will say, “Yes indeed; a Warner did come to us, but we rejected him” and said: “Allah never sent down any [Message] you are in nothing but a great error!” (67:9)
Concerning those who disbelieved in the Qur’an, Allah (swt) says:
“for We have sent you a Message from Our own presence. If any do turn away therefrom, verily they will bear a burden on the Day of Judgement. They will abide in this [state] and grievous will that burden be to them on that Day”. (20:99-101)