The scholars of theology mention that there are 8 roots of disbelief
1. Believing that God has endowed secondary causes with intrinsic power(I.e. Thinking that water quenches thirst intrinsically as opposed to through God)
2. Believing that creation is a function of natural and mechanistic causation
3. Belief that intellect can declare things to be good and/or bad(I.e. Rejection of the role in revelation in determining morality)
4. Reprehensible imitation of others(I.e. Blind following).
5. False tribalism/nationalism/sectarian commitment to a group(تعصب)
6. Being ignorant of something but thinking that one is knowledgeable(جهل مركب)
7. Literalism of the Quran and Sunnah with regard to متشبهات(Ex: Saying Allah has a body part which contradicts a محكم verse such as ليس كمثله شيء)
8. Ignorance of the necessity of what is rationally necessary, the possibility of what is rationally possible, and the impossibility of what is rationally impossible/incoherent
9. Some scholars add a ninth category of being ignorant of the Arabic language
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