Surah Taha — Ayah 15 (20:15)

English translation (Saheeh International)

Indeed, the Hour is coming - I almost conceal it¹ - so that every soul may be recompensed according to that for which it strives.

1. - Meaning that Allāh (subḥānahu wa taʿālā) keeps knowledge of the Hour hidden from everyone except Himself.

Brief commentary

The Hour is most definitely coming and it will certainly occur. I almost keep it hidden so that no creation knows its time, but they are aware of its signs by the information given to them by the Prophet sent to them, so that each soul is rewarded for what it did, whether good or evil.