Argument from scriptural miracles
David Hume was a Scottish philosopher, economist, historian and a key figure in the history of Western philosophy and the Scottish Enlightenment. Hume is often grouped with John Locke, George Berkeley, and a handful of others as a British Empiricist. He challenged the argument from miracles.
Problem of miracles
In his discussion of miracles in An Enquiry concerning Human Understanding (Section 10) Hume defines a miracle as "a transgression of a law of nature by a particular volition of the Deity, or by the interposition of some invisible agent". Given that Hume argues that it is impossible to deduce the existence of a Deity from the existence of the world (for he says that causes cannot be determined from effects), miracles (including prophesy) are the only possible support he would conceivably allow for theistic religions.
Hume discusses everyday belief as often resulted from probability, where we believe an event that has occurred most often as being most likely, but that we also subtract the weighting of the less common event from that of the more common event. In the context of miracles, this means that a miraculous event should be labelled a miracle only where it would be even more unbelievable (by principles of probability) for it not to be. Hume mostly discusses miracles as testimony, of which he writes that when a person reports a marvellous event we [need to] balance our belief in their veracity against our belief that such events do not occur. Following this rule, only where it is considered, as a result of experience, less likely that the testimony is false than that a miracle occur should we believe in miracles.
Although Hume leaves open the possibility for miracles to occur and be reported, he offers various arguments against this ever having happened in history:
People often lie, and they have good reasons to lie about miracles occurring either because they believe they are doing so for the benefit of their religion or because of the fame that results.
People by nature enjoy relating miracles they have heard without caring for their veracity and thus miracles are easily transmitted even where false.
Hume notes that miracles seem to occur mostly in "ignorant" and "barbarous" nations and times, and the reason they don't occur in the "civilized" societies is such societies aren't awed by what they know to be natural events.
The miracles of each religion argue against all other religions and their miracles, and so even if a proportion of all reported miracles across the world fit Hume's requirement for belief, the miracles of each religion make the other less likely.
Despite all this Hume observes that belief in miracles is popular, and that "The gazing populace receive greedily, without examination, whatever soothes superstition and promotes wonder".