Argument from inconsistent revelations
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The argument from inconsistent revelations, also known as the avoiding the wrong hell problem, is an argument against the existence of God. It asserts that it is unlikely that God exists because many theologians and faithful adherents have produced conflicting and mutually exclusive revelations. The argument states that since a person not privy to revelation must either accept it or reject it based solely upon the authority of its proponent, and there is no way for a mere mortal to resolve these conflicting claims by investigation, it is prudent to reserve one's judgment.
It is also argued that it is difficult to accept the existence of any one God without personal revelation. Most arguments for the existence of God are not specific to any one religion and could be applied to many religions with near equal validity. When faced with these competing claims in the absence of a personal revelation, it is argued that it is difficult to decide amongst them, to the extent that acceptance of any one religion requires a rejection of the others. Were a personal revelation to be granted to a nonbeliever, the same problem of confusion would develop in each new person the believer shares the revelation with.
Particular examples 
Christians believe that Jesus is the Christian Messiah, Savior of the World and the divine Son of God; Jews and Muslims do not. Similarly, Muslims believe that the Qur'an was divinely authored, while Jews and Christians do not. There are many examples of such contrasting views, indeed, opposing fundamental beliefs (schisms) exist even within each major religion. Christianity, for example, has many subsets (denominations), not all of which are mutually compatible. Hinduism, with its conception of multiple avatars being expressions of one Supreme God, is more open to the possibility that other religions might be 'correct' for their followers, but this same principle requires the rejection of the exclusivity demanded by each of the Abrahamic religions.
Additionally, Faith-confirming events such as visions and miracles are reported within all faiths with regularity. A single deity associated with a single exclusive existing faith or sect would either have to have caused adherents to other faiths to have visionary or miraculous experiences which lead them to continue to reject the 'true' faith, or at least allowed some other agency to cause these same effects.
The problem does not arise in some theological models. In Deism, it is believed that there is a God, but presumed that there are no divinely caused revelations or miracles at all, leaving reports of such to have natural explanations. In some forms of Pantheism (where God is the Universe) and in Pandeism (where God has become the Universe), the appearance of many inconsistent divine revelations or miracles might simply result unintentionally from the divine nature of the Universe itself.
The concept of mutual exclusivity of different religions itself (as opposed to religious pluralism) is primarily associated with Abrahamic faiths; pagan religions, historically the most common forms of worship, were typically polytheistic and compatible with each other. The roots of the mutual exclusivity may be seen in the Torah, where Jews are ordered to worship the God of Israel to the exclusion of all others; however, even the Torah does not instruct its followers to deny the existence of other gods, in a stance that is now called henotheism. Later theological developments within Judaism led it to adopt the strictly monotheistic stance, where its god was declared the only one true deity in existence, and this position was inherited by Christianity and Islam.
Mathematical description 
If it were to be assumed that:
- The existence of some god is certain,
- There is some number (n) of distinct, mutually exclusive interpretations of that god one could believe in,
- There is no way to tell which one, if any, were true a priori
then the probability of having chosen to practice the correct religion (through upbringing or by making Pascal's Wager) is 1⁄n. Therefore, if there exist more than two distinct faiths, the probability that a person who chooses to believe in either faith has chosen the correct one would be less than 1 in 2 (50% or 1⁄2).
Since there are hundreds of religions in existence, some having thousands of sects with competing interpretations, the probability that a given person's religion should happen to be the one that is true (to the exclusion of all others) is diminishingly small. Additionally, it must be considered that the set from which a person must choose is not simply the set of existing faiths, but the set of all possible faiths. It is for example possible that the 'true' faith is one which was revealed long ago, but has since been forgotten; or is one which has never yet been revealed. This problem is further complicated by those religions which posit the existence of evil spirits capable of misleading humans, since any claimed revelation could have been a false production of such spirits, and any initially true revelation could have afterwards been corrupted and made false by such spirits. And so, if such evil spirits existed, the truth value of any proposed religion must become zero.
The argument appears, among other places, in Voltaire's Candide and Philosophical Dictionary. It is also manifested in Denis Diderot's statement that, whatever proofs are offered for the existence of God in Christianity or any other religion, "an Imam can reason the same way".
See also 
- "Pascal’s Wager Explained - Addendum. Daniel J. Castellano (2011). Addendum: Alternatives to Monotheism".
- "I am the LORD thy God...thou shalt have no strange gods before me..." (Deuteronomy 5:6; emphasis added).
- Diderot, Denis (1875–77) . In J. Assézar. Pensées philosophiques, LIX, Volume 1 (in French). p. 167.