The objective of this present work is to evidence, especially in the novels The Gospel According to Jesus Christ and Cain, what can be classified as the fictional theology of José Saramago, and how this is connected to the themes of theological reflection. To begin, it is necessary to follow the route that enables us to positively identify literature as an authentic theological expression, even in a non-theoretical format. In this way, the relationship between these two forms of historical scholarship , both in rapprochement and detachment, is discussed. However, there is a need to narrow the discussion to fictional novels in order to demonstrate its theological potential. With this backdrop, we penetrate the universe of Saramago seeking to unravel how its construction takes place. Having the author s declared atheism as a presumed influence in the writing of the novels, one perceives how he uses the Bible and carnivalizes it to replace the claims of its traditional meaning by using a true deconstructive theological construction. Continuing in this same direction, the content of the fictional theology of Saramago is highlighted, especially in the so-called biblical novels that, despite their differentiation from theological reflection, are actually related to it insofar as they retrace questions that are of interest to it.