Otherwise there could well be no distinction between 1 who's trustworthy and 1 that is a liar. This is often by the knowledge of Allah, may perhaps He be exalted, that He has made His slaves accountable and enjoined some things on them. A profound verse, Surah Ar Ra’d 23-24, https://johnathandjmpr.bloguerosa.com/29901165/the-basic-principles-of-jannah-firdaus