﴿ نَّحْنُ نَقُصُّ عَلَيْكَ نَبَأَهُم بِٱلْحَقِّ ۚ إِنَّهُمْ فِتْيَةٌ ءَامَنُوا۟ بِرَبِّهِمْ وَزِدْنَٰهُمْ هُدًۭى ﴾

“[And now] We shall truly relate to thee their story: Behold, they were young men who had attained to faith in their Sustainer: and [so] We deepened their consciousness of the right way”

Please check ayah 18:16 for complete tafsir.