 Gamaliel Onosode was the inaugural Chairman of the Global Missions Board of the Nigerian Baptist Convention.In addition, Onosode is Chairman of the Governing Council of the Nigerian Baptist Theological Seminary, Ogbomoso, Nigeria's oldest degree awarding theological institution, which in 2008 marked 110 years of its existence while the University of Ibadan was 60 years old.On 29 September 2015, he died at the age of 82 after losing a battle with bone cancer.