John Calvin (; , ; born : 10 July 150927 May 1564) was an influential French theologian and pastor during the Protestant Reformation. He was a principal figure in the development of the system of Christian theology later called Calvinism, aspects of which include the doctrine of predestination and the absolute sovereignty of God in salvation of the human soul from death and eternal damnation. In these areas Calvin was influenced by the Augustinian tradition. Various Congregational, Reformed and Presbyterian churches, which look to Calvin as the chief expositor of their beliefs, have spread throughout the world.