 Shabbetai Zevi visited him in hopes of “curing” him from an illness that he had contracted.It turns out, of course, that Shabbetai Zevi suffered from a psychological condition which Gershom Scholem identified as manic-depressive psychosis, today normally called "bipolar syndrome".Instead of trying to aid him with his psychological sickness, Nathan of Gaza divulged to Shabbetai Zevi his prophetic vision.