By the way, how do you google a picture?
When you go to google, in the upper left hand corner there is a bunch of options like "map" or "video" or "image". Yahoo and others have similar options. I did an image search. First I tried "painting white beard" and couldn't find it. Then I tried "painting white beard praying" and couldn't find it. Then I tried "painting praying" and found it on maybe the tenth page. That link only had the name of the painting, and the artist. So, then I used the name of the painting and the artists name as my search, and found a bunch of information sites.
Image searches are fun, just make sure you have "safe search" on.