The novel “Strength of Stones” by Greg Bear was published for the first time in 1981. After a series of religious wars, in the XXII century the part of mankind most observant of the Abrahamic religions leaves the Earth and emigrate to the planet God-Does-Battle, where they built huge automated cities that watch over the citizens’s righteousness. However, the religious rules programmed into the cities are strict and they end up evicting humans considering them impure.