A calling, in the religious sense of the word, is a religious vocation (which comes from the Latin for "call") that may be professional or voluntary and, idiosyncratic to different religions, may come from another person, from a divine messenger, or from within oneself. History The idea of a vocation or "calling" has played a significant role within Christianity. Since the early days of the Christian faith, the term has applied to candidates for the clergy. It soon began to be applied to those who felt drawn to a more rigorous observance of their faith through the contemplative lifestyle of the hermits and monks and nuns. Later, Martin Luther taught that each individual was expected to fulfill their God-appointed task in everyday life. Although the Lutheran concept of the calling emphasized vocation, there was no particular emphasis on labor beyond what was required for one's daily bread. Calvinism transformed the idea of the calling by emphasizing relentless, disciplined labor. Calvin defined the role of "the Christian in his vocation", noting that God has prescribed appointed duties to men and styled such spheres of life vocations or callings. Calvinists distinguished two callings: a general calling to serve God and a particular calling to engage in some employment by which one's usefulness is determined. The Puritan minister Cotton Mather discussed the obligations of the personal calling, writing of "some special business, and some settled business, wherein a Christian should for the most part spend the most of his time; so he may glorify God by doing good for himself". Mather admonished that it was not lawful ordinarily to live without some calling: "for men will fall into "horrible snares and infinite sins"". This idea has endured throughout the history of Protestantism. Almost three centuries after John Calvin's death in 1564 Thomas Carlyle would proclaim, "The latest Gospel in this world is, 'know thy work and do it.'" The legacy of this religious ethic continues to exert its influence in secular Western society. Modern occupations which are seen as vocations often include those where a combination of skill and community help are implied, such as medical, care-giving, and veterinary occupations. Occupations where rewards are seen more in spiritual or other non-financial terms, such as religious occupations, are also seen as vocations. Borderline occupations, where community service and more personal reward are more evenly balanced, such as politics, may often be regarded as vocations.