They repel others from this (Quran), as they themselves stay away from it, and thus, they only destroy themselves without perceiving.
وَهُم يَنهَونَ عَنهُ وَيَنـَٔونَ عَنهُ وَإِن يُهلِكونَ إِلّا أَنفُسَهُم وَما يَشعُرونَ
wa hum yanhawna ‘anhu wa yan’awna ‘anhu wa iny yuhlikoona illaa anfusahum wa maa yash’uroon