And may I add something to Phil's comment...the doors are thrown open as well, welcoming, inviting the man to enter, but he sits there on the bench outside. In doubt, indeed!
A magnificent closer, Iris -- by shooting from behind and converting to black and white, you add a tone of sadness to the image. Just as the scooter in the mud suggests a lost childhood, this image suggests
doubts about faith. He may be awaiting mass, but with bowed head and no color anywhere, one can only assume that this image is about faith in crisis.