I have a copy of the Heidelberg Catechism in German but does anyone know whether the German Reformed theologians (distinguishing from the Lutherans) wrote much else in German? From what I've seen there appears to be a lot of Latin but I'd like to get my hands on some stuff they wrote in their native tongue if possible.

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Davidius
Husband of Emily
Member of All Saints Anglican Church - Chapel Hill (AMiA / Anglican Church of North America)
Student: University of North Carolina at Chapel Hill, German and Classics