Dear Brother and Sisters,
Here are the words of a priest and expert:
The universal experience of all exorcists, who have dedicated themselves to this subject, is to have observed that, once the distinction is clearly made between possession and infestation, there sometimes appears a third type of phenomenon, distinct from the other two: ghosts. Ghosts are apparitions of people who are in Purgatory. These apparitions have characteristics which are always the same and very different from infestations:
-the soul appears in human form.
-it does not say anything.
-it appears in a menacing and terrifying manner.
It never moves objects nor makes any noise. When it appears it just stares, in a very unfriendly way, and then just disappears. We know it is not the devil, because the phenomenon does not do anything more. It disappears if masses and prayers are said for its soul. These apparitions are ways of calling our attention so that prayers be said for it.
End of his words.
So, the existence of the phenomena of those souls in purgatory are sometimes seen when God permits. They should be prayed for. Notice no mention of “medium”.
So yes I’m aware of these instances. However they are rare. What is not rare though is like the thought of a departed person suddenly you think of them and a feeling of compassion overcomes you and you pray for them. This all occurs in your mind and spirit The objectivity of such an occurence is a question in my mind. Something deeply personal and meaningful in an individual’s relationship to God and his fellow Man.
And the apostles, who saw Christ walking on water and mention ghosts, that doesn't mean they belief in ghosts. It means that Christ was with them, God Incarnate, and still it took a while for it to sink in: He is the Messiah.
This stuff with mediums is of a totally different nature. Its of an evil nature. I think that people ought to pay attention and work towards the elements in their lives that bring about Salvation.
Salvation what is more important than that?