Why Shirk Is Unforgivable
In Surah Al-Furqan (25:68-69), three major and gravest sins are mentioned together: shirk (associating partners with Allah), murder, and zina (fornication/adultery). It is understood that a person who dies without repenting from any of these sins will face severe punishment. However, there are other Quranic verses, such as Surah An-Nisa (4:48), which state that Allah will forgive all sins except shirk if a person dies without repenting from it. Does this mean that shirk is considered a more severe sin than murder and zina, and that its intensity is higher? Is my understanding correct?