﴿ وَأَسِرُّوا۟ قَوْلَكُمْ أَوِ ٱجْهَرُوا۟ بِهِۦٓ ۖ إِنَّهُۥ عَلِيمٌۢ بِذَاتِ ٱلصُّدُورِ ﴾

“AND [know, O men, that] whether you keep your beliefs secret or state them openly, He has full knowledge indeed of all that is in [your] hearts.”

Please check ayah 67:15 for complete tafsir.