﴿ قَالُوا۟ لَا تَوْجَلْ إِنَّا نُبَشِّرُكَ بِغُلَٰمٍ عَلِيمٍۢ ﴾

“Said they: "Fear not! Behold, we bring thee the glad tiding of [the birth of] a son who will be endowed with deep knowledge."”

They said ‘Do not be afraid; lo! we are the messengers of your Lord sent to give you good tidings of a knowledgeable boy’ one very knowledgeable boy namely Isaac — as we mentioned in sūrat Hūd Q. 1169.