Ever since Criticism and Medieval Poetry first appeared in 1964, Tony Spearing has been a chief advocate and practitioner of the close reading of Middle English verse. It might be equally appropriate to call him one of the best close re-readers of that poetry, because of his ongoing commitment to finding new ways to illuminate and appreciate old texts. Nowhere has his flexible critical intelligence been more evident than in his criticism on the four anonymous poems uniquely found in Cotton Nero A.x. Even before he published The Gawain-Poet: A Critical Study in 1970, he already had work in print on Patience, Pearl, and Sir Gawain and the Green Knight, and he has since returned to each poem at least once, at times providing striking revisions of his earlier work.

This essay celebrates Spearing's contribution to medieval studies by focusing on reading – in this case, the place of lay reading – in the second poem in the manuscript, Cleanness, also known as Purity. Sometimes called a homily in verse, Cleanness is dominated by three Old Testament narratives that the poet uses to elucidate both clannesse and its opposite, fyl.e. The prominence of Latin–English scriptural paraphrase in the work has led Nicholas Watson to identify Cleanness as an example of vernacular theology, and he has argued that the poem and its companions

My aim here is to shift the discussion from the content of vernacular theology in Cleanness to what the poet's choice and handling of scriptural texts may signal about his attitudes towards the audience for vernacular scriptural paraphrase. The question of how to make materials traditionally found in Latin accessible to the non-specialist audience assumed for vernacular writing was a persistent and increasingly vexed issue in later medieval England. As I suggest below, these concerns surface explicitly in the prologues to a number of vernacular religious texts, and such prologues can be seen as an ongoing attempt, in a culture that habitually associated literacy with Latinity, to define what it might mean to be a vernacular reader.