The artist's name is David Garibaldi. He doesn't only do religious art, mind you. But this particular performance happened to be what drew me to him in the first place.
If you find this interesting, you should check out sand-artist Joe Castillo. I was so impressed with a video of his that I sought him out this past summer in Ocean City, NJ to see a live performance of most of his works. AMAZING. Even my husband, the agnostic, enjoyed it.