The Reformation is a major change within Western Christianity that developed between the 14th and 17th centuries when the Roman Catholic Church became segmented into various Christian religions. Martin Luther's dispute of the sale of indulgences is claimed as the clear beginning of the reformation movement. Individual churches eventually developed around the teachings of various reformers such as John Calvin, Martin Luther and Ulrich Zwingli. This Nativity is a painting by Lucas Cranach the Younger as a memorial to Caspar Niemegk and his wife. (They are shown in the foreground). The Niemegks were prominent citizens in Wittenberg, Germany. His father, Anton Niemegk, Cranach the Elder and Cranach the Younger served as mayor of Wittenberg in the 16th century. The painting (oil on wood, 1564) is located in the City Church in Wittenberg, which Martin Luther called his own church. The characters in the paintings are portrayed as typical well-to-do citizens in Wittenberg. The stable is located in the surrounding countryside of the city during the 16th century. The inscription reads, "Glory to God in the Highest. Peace on Earth and Good Will Toward Men."