What if Christian miracles don't come from God?

In a recent podcast, Stand To Reason addressed the following question:

"All supposed revelation of religions involves a subjective experience of receiving that revelation, so how do we know the biblical authors (Moses, the prophets, etc.) were interpreting their experiences correctly as opposed to Mohammed or Joseph Smith?"

I don't know how much the questioner was thinking of something like a scenario in which Christianity is a demonic deception. But that objection comes up occasionally and doesn't get addressed much, so I want to take this opportunity to address it again. Go here for a couple of comments I wrote on the topic a few years ago, then read this one that I wrote shortly afterward. The second thread just linked also has some comments from Hawk on the subject. For a response to the notion that Christian miracles are just manifestations of human paranormal capacities, see here.

I've given a couple of examples above, namely demons and human paranormal abilities. But the same principles are applicable to other non-Divine sources (e.g., an alien trying to deceive us). A Christian just has to argue that God is the best explanation, not that no other explanation is possible.