there are a number of conditions that can produce a combination of depression, paranoia, and sensitivity to paranormal events
Schizophrenia
Bipolar Affective disoder
Schizo-affective disorder, which combines features of the first two conditions--here is a URL
[
www.noah-health.org]
and, possibly, major depression
These conditions each require different treatment strategies, and the only person who can sort that out is a psychiatrist who is skilled in diagnostics and who will be up to date on all the treatment protocols for each of these conditions
But your friend needs help. Dont get distracted by the 'spiritual' issues. That can come later. Right now, the risk for suicide is the most urgent matter for your friend and must take priority. I advise, first of all, getting advice from someone who is experienced at handling crisis calls at a mental health facility. That person may be able to coach you on general strategies to keep lines of communication open between yourself and your friend.
No matter how spiritually aware a person happens to be, that will do them no good if they are
suicidal, cant stay employed or housed, etc.
Rght now the most urgent issues are the suicidal ideation and mood, and the need for your friend to stay housed, healthy and employed. Once social networks are disrupted, they are difficult to repair.
The thing is for your friend to consult a psychiatrist who understands the interface between the psychiatric and the spiritual. A psychiatrist named Nelson wrote an excellent book on this whole subject entitled Healing the Split. He spells out the difference between mental disruption that is part of genuine spiritual breakthrough and syndromes that are not spiritual at all, but psychosis that require medical intervention.
Make it clear you love your friend and stay focused on the need to get professional help. Try and get advice from a social worker (they know how bureaucracy works, plus they have counseling skills) who also has ties to prescribing psychiatrists.
But, you have to take care of yourself, too. Dont let the person stay with you or visit you if you have any doubts about safety.
When push comes to shove, your limits have to be protected, especially if you are responsible for the care of young children.