Joshua Peter Phillips You are of course referring to Pierre Brully, sent to the Catholic region of the Netherlands and the Venerable Company – I will allow Philip Williams to listen to your argument first namely

Calvin sent missionaries to catholic Christians oh WOW 🙂 Gustav Warneck, a sympathetic observer,
said categorically that there was no recognition in Calvin of the church
having a duty to send out missionaries. He averred that the only missionary
responsibility found in Calvin’s thought was in regards to the duty of
the magistrate to introduce the true religion in all his subjects. Warneck’s views have generally been adopted by other writers of Protestant missionary

Gustav Warneck, Outline of a History of Protestant Missions from the Reformation
to the Present Time, trans. by George Robson (New York: Fleming H .
Revell Company, 1901)

Why am I NOT a Calvinist? REASON #3 MISSIONS