Pretty much the title. My Muslim (now ex) college best friend recently turned Atheist and I'm not sure what I should do now. I've tried my best to convince him back to Islam but now after weeks of arguments I'm almost sure he won't be coming back. He says he's only told me and one other friend about this yet. I've heard quite a few times that the penalty of leaving Islam willingly is death so I'm not sure what I should do and who I should tell because after all he's my best friend. I'm afraid if I too will be held responsible if I decide to not do anything. Thanks!
Quran 3:32 Say, "Obey God and the Messenger." But if they turn away - then indeed, God does not like the disbelievers.
Quran 4:56 Indeed, those who disbelieve in Our verses - We will drive them into a Fire. Every time their skins are roasted through We will replace them with other skins so they may taste the punishment. Indeed, God is ever Exalted in Might and Wise.
Quran 8:55 Indeed, the worst of living creatures in the sight of God are those who have disbelieved, and they will not [ever] believe.
Quran 7:179 And We have certainly created for Hell many of the jinn and mankind. They have hearts with which they do not understand, they have eyes with which they do not see, and they have ears with which they do not hear. Those are like livestock; rather, they are more astray. It is they who are the heedless.
“Indeed, God orders justice and good conduct and giving to kith and kin and forbids immorality and bad conduct and oppression. He admonishes you that perhaps you will be reminded.” – Noble Quran 16:90
“O you who believe! Take not the Jews and the Christians as Awliyaa’ (friends, protectors, helpers), they are but Awliyaa’ of each other. And if any amongst you takes them (as Awliyaa’), then surely, he is one of them. Verily, Allaah guides not those people who are the Zaalimoon (polytheists and wrongdoers and unjust)” [al-Maa’idah 5:51]
But no, by your Lord, they will not [truly] believe until they make you, [O Muhammad], judge concerning that over which they dispute among themselves and then find within themselves no discomfort from what you have judged and submit in [full, willing] submission. (Surah Nisaa, verse 65)
“and We shall make a trial of you with evil and with good. And to Us you will be returned” [al-Anbiya’ 21:35 – interpretation of the meaning]
Those who reject Our Signs We shall soon cast into the Fire: as often as their skins are roasted through, We shall change them for fresh skins, that they may taste the penalty: for God is Exalted in Power, Wise. (an-Nisa 56) The companions of the fire will call the companions of the garden; "pour down to us water or anything that God doth provide for your sustenance." They will say: "Both these things hath God forbidden to those who rejected Him.― Such as took their religion to be mere amusement and play and were deceived by the life of the world." That day shall We forget them as they forgot the meeting of this day of theirs, and as they rejected Our signs. al-(Araf 50-51)
But those who reject (God)― for them will be the Fire of Hell: no term shall be determined for them so they should die, nor shall its Penalty be lightened for them: Thus do We reward every ungrateful one! Therein will they cry aloud (for assistance): "Our Lord! Bring us out: we shall work righteousness, not the (deeds) we used to do!"― Did we not give you long enough life so that he that would should receive admonition? And (moreover) the warner came to you. So taste ye (the fruit of your deeds): for the Wrongdoers there is no helper.” (Fatir 36-37)
004.137 “Those who believe, then reject faith, then believe (again) and (again) reject faith, and go on increasing in unbelief - God will not forgive them nor guide them nor guide them on the way”
So in other words, you don’t need to be responsible for him, it is he who left Islam, and if God wishes, he may return to Islam one day before is too late. So, don’t worry, if you did not left Islam, then don’t worry, it is not your mistake that he left Islam. And, if he turned away from Islam, then do not be his best friend any more, unless he repents sincerely to God because of his most heinous sin=disbelief. He is the one who will get punished by God Almighty not you. So, stay relaxed and move on.
Hope I helped you.