Seek and Ye Shall Find: How to Resurrect Images of Messiahs and the Dark Side
I laughed myself silly on this Telegraph piece on how people have resorted to make money or to prove the existence of a supernatural being. Try photoshop, vinegar art, and just plain coincidence.
So I tried an experiment and found my own faces without trick photography or fabrication, problem was I only got skulls, demons, monsters and no messiahs!

Another door frame and another demon face this time howling with mischievous laughter, uuuuuh scary!