This document discusses the evolution of daylight in church architecture from ancient times to the modern era. It covers major periods and styles such as ancient Roman, early Christian, Romanesque, Gothic, Renaissance, and modern. Key developments include the Pantheon's use of an oculus to bring in natural light, Gothic cathedrals using stained glass windows and flying buttresses, and modern churches by architects like Le Corbusier and Tadao Ando featuring innovative uses of natural light through windows, skylights, and concrete materials. The document emphasizes how different architects throughout history have designed churches to symbolize God as light and create spiritual atmospheres through the integration of daylight.