"In the broader sense, theology refers to 'what Christians think.'  In this sense, all Christians have a theology--a basic, even if often simple, understanding--whether they are aware of it of not.  In this broader sense, theology does matter.  There is 'bad' theology, by which I mean an understanding of Christianity that is seriously misleading, with unfortunate and sometimes cruel consequences.  But the task of theology is not primarily to construct an intellectually satisfying set of correct beliefs.  Its task is more modest.  Part of its purpose is negative: to undermine beliefs that get in the way of taking Christianity seriously.  Part of its purpose is positive: to construct a persuasive and compelling vision of the Christian life.  But being Christian isn't primarily about having a correct theology by getting our beliefs right.  It is about a deepening relationship with God as known especially in Jesus."

--Marcus Borg, Convictions: How I Learned What Matters Most