Tafseer Ibn Kathir of AL JIN [24]

حَتَّى إِذَا رَأَوْا مَا يُوعَدُونَ فَسَيَعْلَمُونَ مَنْ أَضْعَفُ نَاصِرًا وَأَقَلُّ عَدَدًا

[The disbelievers continue] until, when they see that which they are promised, then they will know who is weaker in helpers and less in number.