Surah Al-Hijr 15:53

قَالُوا۟ لَا تَوْجَلْ إِنَّا نُبَشِّرُكَ بِغُلَـٰمٍ عَلِيمٍ

[The angels] said, "Fear not. Indeed, we give you good tidings of a learned boy."

Translation: Saheeh International

Tafsir

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.

Excerpt from Tafsir al-Jalalayn, commentary on 15:53, via Quran.com. The reader has the full commentary and 9 more tafsirs.