Quran 67:13 — Surah Al-Mulk, ayah 13

وَأَسِرُّواْ قَوۡلَكُمۡ أَوِ ٱجۡهَرُواْ بِهِۦٓۖ إِنَّهُۥ عَلِيمُۢ بِذَاتِ ٱلصُّدُورِ

And conceal your speech or publicize it; indeed, He is Knowing of that within the breasts

Govorili vi tiho ili glasno – pa, On, sigurno, zna svačije misli!