First of all, the true religion must be compatible with man's initial natural disposition that needs a direct relationship with its Creator without the interference of mediators, which represents man's virtues and good qualities.
It also has to be a religion that is easy and simple, understood and not complicated, and appropriate for every time and place.
It must be a consistent religion for all generations, countries, and all types of people along with various laws that fit man's need in all times. It must not accept additions or omissions depending on personal desires as in the case of customs and traditions that have been established by people.
It must include clear beliefs and must not need a mediator. It must not depend on emotions; rather, it must depend on sound and proven evidence.
It must cover all issues of life and all time and place, and must be fit for this worldly life and for the Hereafter, and it must build the soul without forgetting the body.
It must protect people's lives, honor, and properties and must respect their rights and minds.
Thus, whoever does not follow such a methodology that conforms with his natural disposition will live a confused and an unstable life, and will feel constriction in his chest and breath, let alone the torment in the Hereafter.