Various, Encyclopaedia Britannica, 11th Edition…
“ The Heidelberg Catechism, set forth by order of the elector, is perhaps the most widely accepted symbol of the Calvinistic faith, and is noteworthy for its 506 emphasis on the less controversial aspects of the Genevan theology. As revised by the synod of Dort in 1619, this catechism became the standard of most of the Reformed churches of central Europe, and in time of the Dutch and German Reformed churches of America. ”
