In the 16th century, church thinkers and leaders such as Martin Luther and John Calvin demanded changes in Roman Catholic Church doctrine and practice. That led to the development of denominations made up of the protesters or “protestants” who declared themselves independent of papal authority. Many Protestants say the word means to “testify forth,” as in to preach the word of God. Protestant churches include Anglican, Baptist, Congregational, Methodist, Lutheran, Presbyterian and Quaker churches. The label Protestant is not applied to Christian Scientists, Jehovah’s Witnesses or Mormons. It also should not be used to describe a member of an Orthodox church.