 High school teacher August Friedrich Christian Vilmar turned from rationalism to faith, and in doing so, realized the importance of the unaltered "Augsburg Confession" and the other Lutheran Confessions of faith.An advocate of the Neo-Lutheran movement (which was allied with the Old Lutherans against rationalism), he worked to renew the church through the use of the Lutheran Confessions.Neo-Lutheran Johann Konrad Wilhelm Löhe and Old Lutheran free church leader Friedrich August Brünn both sent young men overseas to serve as Pastors to German Americans, while the Inner Mission focused on renewing the situation home.