Whereas Martin Luther would admit any suitable text to be sung in worship unless it was unbiblical, John Calvin would allow only those texts which came from Scripture. Calvin commissioned poets to write metrical settings of the Psalms for the congregations in Strassburg and Geneva. Calvinist churches throughout Europe developed large repertories of psalmody, especially churches in England and Scotland.
Calvin argued that only practices explicitly taught in Scripture could be used in worship. For this reason, churches influenced by Calvin have been less inclined to restore pre-Reformation practices of worship perceived as unbiblical or “Catholic.”
From Scotland, Calvinism was spread around the world through aggressive mission activities.
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.
Several historic streams have shaped the worship of the relatively young Reformed denomination known as the Presbyterian Church in America (PCA).