The object of this article is to present Christian theology as a case of a Harrean theory, as a mapping which links the members of one set of entities to those of another in a systematic way. I will divide the article into four parts. The first one will be devoted to a brief presentation of the main characteristics of Harré's proposal. Once the fundamentals of the Harrean perspective are presented, the second section will be the presentation of Christian theology as a case of a Harrean theory. The third and fourth sections are concerned with showing how two classic theological topics, conversion and prophecy, can be framed within this perspective in a cohesive and fruitful way.