Surah Al-Anbiya, ayah 110

21:110

إِنَّهُۥ يَعۡلَمُ ٱلۡجَهۡرَ مِنَ ٱلۡقَوۡلِ وَيَعۡلَمُ مَا تَكۡتُمُونَ ١١٠

Innahū ya'lamul-jahra minal-qawli waya'lamu mā taktumūn

Indeed, He knows what is declared of speech, and He knows what you conceal.