6th paragraph from below:
 
As for miracles, what is not a miracle? If what is is not and what does not seem is, what is not a miracle? Is it not miracle-seeming that you read My thoughts here after they were written down and not before? And yet My thoughts are streaming always like a beautiful mist in a glade. My thoughts are streaming even in a desert. There is nothing that cannot be called a mirage. Only I Whom am not seen cannot be called a mirage.

http://www.heavenletters.org/the-cow-jumps-over-the-moon.html
 
Shouldn't it be Who?