Surah Al-Hajj 22:70

أَلَمْ تَعْلَمْ أَنَّ ٱللَّهَ يَعْلَمُ مَا فِى ٱلسَّمَآءِ وَٱلْأَرْضِ ۗ إِنَّ ذَٰلِكَ فِى كِتَـٰبٍ ۚ إِنَّ ذَٰلِكَ عَلَى ٱللَّهِ يَسِيرٌ

Do you not know that Allāh knows what is in the heaven and earth? Indeed, that is in a Record. Indeed that, for Allāh, is easy.

Translation: Saheeh International

Tafsir

Do you not know the interrogative here is meant as an affirmative that God knows all that is in the heaven and the earth? Truly that which has been mentioned is recorded in a Book namely the Preserved Tablet al-lawh al-mahfūz. Indeed that namely the knowledge of what has been mentioned is easy for God.

Excerpt from Tafsir al-Jalalayn, commentary on 22:70, via Quran.com. The reader has the full commentary and 9 more tafsirs.