ST. LOUIS — Oswald C.J. Hoffmann, the voice of “The Lutheran Hour” radio program for more than three decades, died Sept. 8 after a brief illness. The religious broadcasting pioneer and minister of the Lutheran Church-Missouri Synod was 91, Lutheran Hour Ministries said in an announcement. Ordained in 1939, Hoffmann was the speaker for the program from 1955 until 1988.…