LACKAWANNA, N.Y. — The religious scenes playing out on the interior walls of St. Stephen Serbian Orthodox Church could have been painted centuries ago: Saints with gilded halos, winged angels hugging curved arches, calligraphic lettering helping to tell ancient stories. But the paint is barely dry. This brick sanctuary on a street busy with shopping and fast food was, on and off for more than six years, the canvas of the Rev. Theodore Jurewicz as he quietly practiced an art form that had its beginnings in the Roman Empire.