This paper deals with Muriel Spark and, in particular, seeks to explore the author's use of the Bible. The paper is divided into two parts. In the first, I will present the figure of Muriel Spark and, in particular, the role that her conversion to Catholicism played in her literary production. In the second part, I will give some examples of the author's use of Scripture, particularly regarding the choice of biblical texts and how they are reworked. A brief conclusion will summarize the main theological themes that emerge from the preceding analysis.