 He served as a minister of the Evangelical Christian Church in Halmahera, Indonesia from 1972 to 1985, and continues to be a Minister of that Church.Haire served as Uniting Church minister of Darwin City Parish (Darwin Memorial Church) (Northern Territory, Australia) from 1985 to 1986.From 1987 to 2003, he was professor of New Testament studies at Trinity Theological College, Brisbane, and was principal of Trinity College from 1992 to 2000.