How did Calvin’s contemporaries and earliest readers likely understand the relationships among the senses, the imagination, and conscious thought? This chapter constellates a sixteenth-century understanding of visual perception with developments in optics, art, popular magic, religion, witchcraft, and demonology to deliver a usable summary of the sensory and epistemological premises that animated European visual culture during the Renaissance. Ultimately, it concludes that “perception” is a more historically illuminating shorthand than “knowledge” for the Institutes’ central concern.

This chapter tests the proposed “perception versus delusion” framework across a broad swath of the Institutes, tracing how familiar doctrinal loci – including faith, illumination, union with Christ, the law, justification, and predestination – gain new coherence within an itinerary of perceptual rehabilitation. The result is a composite picture of how Calvin’s God choreographs accommodations, supernatural help, and even human interventions like doctrine to enable fallen humans to approximate the perceptual ideal of spectatorship unto piety outlined in Chapter 2, but to do so under the conditions of imaginative dysfunction described in Chapter 3.

The Introduction establishes Calvin and Perception’s central contribution: interpreting the perceptual themes of John Calvin’s Institutes through a historically grounded account of early modern perception, rather than the post-Cartesian assumptions about vision and knowledge that have silently shaped previous scholarship. Returning the text to the visual culture of its time – in which the imagination, not the intellect, governed the pre-conscious processing of sense data – yields a new “perception versus delusion” paradigm. This interpretive lens reframes Calvin’s magnum opus as an intervention designed to suppress imaginative dysfunction and to enable the accurate perception that naturally issues in piety.

This chapter interprets Calvin’s infamous claim that the human mind is a “perpetual factory of idols” through early modern theories of imaginative dysfunction unto delusion. Calvin’s charge of “idolatry,” including the institutionalized idolatry of the Catholic Mass, emerges as a targeted diagnosis of a condition that inverts the ideal of spectatorship – one in which a sinful imagination, left unchecked, generates corrupted phantasms that come to supplant external sense data, resulting in functional blindness to God’s sensible accommodations.

Extending Calvin and Perception’s argument to the level of form, this chapter asks how the vivid and severe stylistic features of Calvin’s prose address the imaginative and thus perceptual dysfunction Calvin attributes to his readers. By connecting Renaissance rhetorical theory to early modern premises about language’s ability to create vivid phantasms upon the imagination, it presents Calvin’s “straightedge prose” as an intervention in unconscious perception – a way not only to persuade the reader of doctrinal content, but to counteract delusion while stimulating the accurate perception of accommodations that elicits piety.

By recovering the physiological and affective assumptions behind early modern artistic and dramatic spectatorship, this chapter lays out the Institutes’ perceptual ideal – a condition in which humans encounter God’s fatherly stance through their senses and imagination before conscious thought can even occur. This discussion reveals that the pre-conscious, evaluative dimension of perception as it was understood by early modern Europeans provides a plausible mechanism for how sensible accommodations such as creation, the sacraments, and scripture might be expected to directly elicit the immediate, pre-rational, affective orientation Calvin calls piety.