The church considers evangelism as the most central aim and duty or its mission. The department oversees activities of the various sub groups of the church such as the Women Fellowship, Men Fellowship, Boys and Girls Brigades, Fulani and Hausa Evangelism, COCIN Community Mission etc. Right now, COCIN has over one hundred missionaries working in the field, apart from those who are affected by the recent crisis in Borno and Yobe states.