Al-Hashr · 59:14

14. O believers! The Jews will not fight you united except in dwellings fortified with walls, or from behind walls, because they cannot face you due to their cowardice. Their internal might is severe due to their enmity to one another. You think of them to be one force and that their pedestal is one, but the reality is that their hearts are divided and conflicting. This conflict and enmity is because they do not understand; if they were to understand they would recognise the truth and follow it, not dispute in it.