on
Likiep Atoll According to his biographer John Garrett, after recovering from his illness Heine experienced an "evangelical conversion within the Marshallese church, a classic
re-birth" leading him to become involved in church work. He became fluent in
Marshallese, and
incorporated local beliefs into Christian practices. In 1906, Heine was ordained as a
Congregationalist minister by the
American Board of Commissioners for Foreign Missions (ABCFM), commonly known as the Boston Mission. He ran a mission school on Jaluit Atoll with around 250 students and a
Christian Endeavour section with around 300 members. In about 1931, Heine organised an association of atoll churches in response to increased activity from Japanese missionaries. The organisation met every two years, with Marshallese evangelists given the opportunity to participate in framing mission policy. The meetings were banned by the Japanese during World War II but were revived in 1946 and ultimately developed into the
United Church of Christ – Congregational in the Marshall Islands (UCCCMI). After World War I, the Marshall Islands became part of the Japanese-administered
South Seas Mandate. Heine and other ABCFM missionaries, including Jessie Hoppin, visited Japan on a number of occasions, and he had contacts in the
Imperial Japanese Navy. One of his great-grandchildren was named after the Japanese Protestant missionary
Joseph Nijima. Heine wrote a number of articles for
Pacific Islands Monthly on the Japanese administration, including a 1937 article titled "In Defence of Japan" which refuted criticisms made by the
Permanent Mandates Commission.
Detention and execution Following the
attack on Pearl Harbor in 1941 and the outbreak of the
War in the Pacific, most Americans withdrew from the Marshall Islands leaving Heine in charge of ABCFM activities. Heine was regarded with suspicion by Japanese troops. Unlike his younger family members, he had not learned to speak Japanese during the period of civilian administration. He was given the option to leave the islands, but preferred to remain with his family and was placed under house arrest. He and his wife were placed in solitary confinement upon the commencement of
U.S. bombing raids in 1942. Heine was executed by beheading by the Japanese authorities in April 1944, along with his son Claude and daughter-in-law Grace. The executions were witnessed by Claude's 12-year-old son John. ==Personal life and legacy==