Against Spener , the leader of the Pietists , he charged no less than 263 heresies .
During the Syncretistic Controversy and Pietistic controversy he represented the extreme orthodox Lutheranism ; and opposed especially the younger Calixtus and the theology of the Pietists .
Against Spener , the leader of the Pietists , he charged no less than 263 heresies .
During the Syncretistic Controversy and Pietistic controversy he represented the extreme orthodox Lutheranism ; and opposed especially the younger Calixtus and the theology of the Pietists .