﴿ لَا يُقَٰتِلُونَكُمْ جَمِيعًا إِلَّا فِى قُرًۭى مُّحَصَّنَةٍ أَوْ مِن وَرَآءِ جُدُرٍۭ ۚ بَأْسُهُم بَيْنَهُمْ شَدِيدٌۭ ۚ تَحْسَبُهُمْ جَمِيعًۭا وَقُلُوبُهُمْ شَتَّىٰ ۚ ذَٰلِكَ بِأَنَّهُمْ قَوْمٌۭ لَّا يَعْقِلُونَ ﴾

“Never will they fight you, [even] in unison, otherwise than from within fortified strongholds or from behind walls. Severe is their warlike discord among themselves: thou wouldst think that they are united, whereas [in fact] their hearts are at odds [with one another]: this, because they are people who will not use their reason.”

They that is the Jews will not fight against you together all in a single body except in fortified towns or from behind some wall jidār a variant reading has plural judur ‘walls’ some kind of protective fence. Their might their belligerence is great among themselves. You would suppose them to be all together united as a single body but their hearts are disunited scattered contrary to supposition. That is because they are a people who have no sense;