In late 1615, when Middelburg professor Antonius Walaeus published "Het Ampt der Kerckendienaren" (a response to Johannes Wtenbogaert's 1610 "Tractaet van 't Ampt ende authoriteit eener hoogher Christelijcke overheid in kerckelijkcke zaken") he sent Grotius a copy out of friendship. This was a work "on the relationship between ecclesiastical and secular government" from the moderate counter-remonstrant viewpoint. In early 1616 Grotius also received the 36 page letter championing a remonstrant view "Dissertatio epistolica de Iure magistratus in rebus ecclesiasticis" from his friend Gerardus Vossius.