Carl Olof Rosenius was a Swedish lay preacher, author and editor of the monthly Pietisten from 1842 to 1868. He was one of the country's most widely-heard preachers of his day and has been described as being of "extraordinary importance for the low-church evangelical revival not only in Sweden but also in the other Nordic countries".

Erik Ludvigsen Pontoppidan was a Danish author, a Lutheran bishop of the Church of Norway, a historian, and an antiquarian. His Catechism of the Church of Denmark heavily influenced Danish and Norwegian religious thought and practice for roughly the next 200 years after its 1737 publication.