We have visions of saints, private revelations, apparations, mystical experiences, miracles, stigmatas, exorcisms, etc. All revealing What we believe... besides this, is there any other kind of divine experiences? Example: buddists 'seeing' Buddha? Muslims receiving a message from the other side confirming there's virgins as reward for their heroic actions? Ancient romans talking to pagan gods? If yes, how to defend with our faith?
Which is why Christ told us not to rely on such things, and that is the only way to defend against the fact that religious visions are a common phenomena, inside and outside of Christianity.
I knew a man who became a Baha'i after seeing an apparition in the hallway that called him by name to join that religion!!!!!