كَانُواْ لاَ يَتَنَاهَوْنَ عَن مُّنكَرٍ فَعَلُوهُ لَبِئْسَ مَا كَانُواْ يَفْعَلُونَ

[و] از كار زشتى كه آن را مرتكب مى‏شدند يكديگر را بازنمى‏داشتند راستى چه بد بود آنچه مى‏كردند

they did not forbid one another from the wrongdoing they were committing. evil is what they were doing.