In this essay, I defend theology against a recent argument made by Peter Byrne. According to Byrne, any discipline of thought that can be interpreted realistically shows the accumulation of reliable or widespread belief about the reality it investigates. I challenge this claim, first, by showing how theology, so construed as an exercise of ‘faith seeking understanding’, can and should be interpreted realistically, even if it does not show the accumulation of reliable or widespread belief about divine reality. Second, I give a plausible account of why theology is beset by internal disagreement and division, even if the goal of theological enquiry is to overcome such disagreement and division.