Say , " Fighting therein is a great ( transgression ) but a greater ( transgression ) with Allah is to prevent mankind from following the Way of Allah , to disbelieve in Him , to prevent access to Al-Masjid-al-Haram ( at Makkah ) , and to drive out its inhabitants , and Al-Fitnah is worse than killing . And they will never cease fighting you until they turn you back from your religion ( Islamic Monotheism ) if they can .