The general term for types of Christian faith originating from the Reformation. Although the early forms of Protestantism were those who followed Luther, Calvin, and Zwingli, the term now includes most non-Roman Catholic or non-Orthodox denominations. Protestants want to be closer to the style of faith of the early Church which they feel has been obscured in Catholic practices. The term derives from the word 'protestari' which means not only to protest but to avow or confess. Common characteristics of Protestantism include the justification by faith alone, the authority of scripture, and the priesthood of all believers, in which not only the clergy are able to hear the confession of sin.