وَمَنْ أَظْلَمُ مِمَّنِ ٱفْتَرَىٰ عَلَى ٱللَّهِ كَذِبًا أَوْ كَذَّبَ بِٱلْحَقِّ لَمَّا جَآءَهُۥٓ ۚ أَلَيْسَ فِى جَهَنَّمَ مَثْوًى لِّلْكَـٰفِرِينَ Qur’an Al-Ankabut (29:68)Waman athlamu mimmani iftara AAala Allahi kathiban aw kaththaba bialhaqqi lamma jaahu alaysa fee jahannama mathwan lilkafireena
I.e., by persuading himself that there is, side by side with God or even independently of Him, any "power" that could govern men's destinies.
Cf. vi. 21. Even from a worldly point of view those who reject Allah's Truth are at a disadvantage. But those who deliberately invent lies and set up false gods for worship, what punishment can we imagine for them except a permanent deprivation of Allah's grace, and a home in Hell?