Intellect has its limitations, but can solve the contrdictions that arise in the beleif system of the devotees. It is belief systems that causes wars between religions and within the various sects of a religion. Belief holds good only for the person, not for the whole lot. Belief's are subject to change , because the mind changes. What an individual or a group of indivudals believed can changed over time.
Wheareas Truth is Truth and does not depend on the belief of the mind.