Anglican worship has a variegated history, having fluctuated between worship forms similar to those of Catholicism and worship influenced by the Puritans. This accounts in part for the variations in worship within the Anglican communion of today. Nevertheless, The Book of Common Prayer is basic to all Anglican churches.
John Knox (c. 1514-1572) was born in Haddington, Scotland and educated at the University of Glasgow. He was originally a Roman Catholic priest. In 1543 he converted to Protestantism due, primarily, to the preaching of the reformer George Wishart.