Surah Al-Hujurat 49:16
قُلْ أَتُعَلِّمُونَ ٱللَّهَ بِدِينِكُمْ وَٱللَّهُ يَعْلَمُ مَا فِى ٱلسَّمَـٰوَٰتِ وَمَا فِى ٱلْأَرْضِ ۚ وَٱللَّهُ بِكُلِّ شَىْءٍ عَلِيمٌ
Say, "Would you acquaint Allāh with your religion while Allāh knows whatever is in the heavens and whatever is on the earth, and Allāh is Knowing of all things?"
Translation: Saheeh International
Tafsir
Say to them ‘Do you pretend to inform God about your religion read the doubled 2nd verbal form a-tu‘allimūna ‘do you inform’ in other words are you intimating to Him your religious status when you say ‘We believe’ when God knows all that is in the heavens and all that is in the earth and even though God is Knower of …
Excerpt from Tafsir al-Jalalayn, commentary on 49:16, via Quran.com. The reader has the full commentary and 9 more tafsirs.