Religious subject matter is not central in 20th century art. One might therefore suspect that, for the avantgarde, the Spanish Civil War (1936-1939) would have eclipsed religion altogether. However, as Juan Jos Lahuerta argues in this book, the war caused a considerable revival of certain themes of religious art. In particular, it intensified Pablo Picasso's lifelong preoccupation with the subject of the Crucifixion. The work of the Swiss...