Quran 71:9 from Surah Nooh on Divine Marvels.
ثُمَّ إِنِّيٓ أَعۡلَنتُ لَهُمۡ وَأَسۡرَرۡتُ لَهُمۡ إِسۡرَارٗا
English translation: Then indeed I announced to them and I confided to them secretly
Transliteration: thumma inni a'lantu lahum wa-asrartu lahum is'raran