Abstract: This paper compares the ways in which revealed theology, natural theology and philosophical theology justify religious belief. Revealed theology does so with an appeal to revelation and natural theology with an appeal to reason and perception. It is argued that both are inadequate. Philosophical theology analyses the meaning rather than proving the truth of religious belief. In doing so it does show how truth claims are entailed by a religious tradition and how the whole heritage of a tradition should be coherent, credible, and intelligible as well as relevant and adequate to the demands of life.