"So a miracle leaves its frame, and one epiphanic detail Illuminates an entire epoch" --Derek Walcott, from Tiepolo's Hound Art did not exist in Byzantium. As Glenn Peers explains in Sacred Shock, there were, instead, a variety of devotional objects--pectoral crosses, church mosaics, icons, and illuminated manuscripts--regarded as infused with divine presence and used in religious practices. What concerns Peers in this provocative...