The theological term irenicism (“peaceful attitude/behavior,” from Greek eirenikós, “peaceful”), called “syncretism” by its opponents, goes back to the end of the 17th century and denotes a stance oriented toward balance and peace and aimed at bringing about cooperation among the Christian denominations [3]; [4].

The background for this movement was Humanist; Erasmus of Rotterdam, especially, idealized unity within the Church. In the 16th century, it received early support from the German reformer Martin Bucer, initially focused on the two denominations of Calvinism and L…