Quran 2:77 from Surah Al-Baqara on Divine Marvels.
أَوَلَا يَعۡلَمُونَ أَنَّ ٱللَّهَ يَعۡلَمُ مَا يُسِرُّونَ وَمَا يُعۡلِنُونَ
English translation: Do not they know that Allah knows what they conceal and what they declare
Transliteration: awala ya'lamuna anna al-laha ya'lamu ma yusirruna wama yu'linuna