Thus Sasse begins nearly thirty years of correspondence with Lutheran pastors in Australia, the United States, and around the world on topics as varied as the nature of the Sacraments or of the Church, mission, church history, the nature of Scripture, ecumenical issues (especially unification efforts in the Lutheran Church and world Christianity), and much more. Each letter reflects Sasse s passionate commitment to the building up of the Church of Christ on earth and to the Lutheran Confessions.