Quran 67:12 — Kingship (Al-Mulk)

As for those who reverence their Lord, when alone in their privacy, they have attained forgiveness and a great recompense.

[67:11] Thus, they confessed their sins. Woe to the dwellers of Hell.

[67:13] Whether you keep your utterances secret, or declare them, He is fully aware of the innermost thoughts.