This article examines the interplay between text and paratext in the 1569 Spanish Bible (T. Guarinus: Basel). It specifically discusses how paratextual commentary can be drawn upon in order to account for the decisions made by Casiodoro de Reina in his translation of Rom. 3,28. The study draws on the works of Francis Higman and Gérard Genette and their respective proposals regarding the function of the paratext. While the rendering Casiodoro de Reina provides of Rom. 3,28 appears at first glance to reflect an antinomian theology, study of the paratext quickly reveals an elevated and nuanced view of the law. Study of the paratext also allows us to conclude that both Reina's rendering of Rom. 3,28 and his paratextual commentary are strong indicators of his own intellectual gravitation towards Reformed theology, contrary to existing scholarship that suggests Reina's identification with spiritualist tendencies of the sixteenth century.