The controversy over the beatific vision, initiated by John XXII with his All Saints' Day sermon in 1331, rapidly evolved into one of the most intense doctrinal disputes of the later medieval Church. By contending that the souls of the blessed would attain full vision of God only after the Last Judgement, the pontiff disrupted the prevailing theological consensus, triggering vigorous responses across ecclesiastical and intellectual circles. Despite the extensive range of studies currently available, the manuscript context of John's early sermons has rarely been examined as a structured documentary response to papal teaching. This contribution therefore addresses this issue through the material and textual evidence preserved in Cambridge, University Library, MS Ii 3.10, the only known manuscript transmitting John XXII's first two sermons on the visio beatifica (1 November and the third Sunday of Advent 1331). Indeed, rather than preserving these texts in isolation, the codex places them at the beginning of a broader documentary sequence that includes theological responses, polemical interventions, and inquisitorial records. A codicological and textual analysis of this dossier will thus demonstrate, from a further perspective, how the papal homiletic intervention fostered a field of theological controversy, within which the doctrinal authority of the pontiff was simultaneously debated, endorsed, and challenged. Consequently, the Cambridge manuscript emerges as a pivotal witness to the spread and reception of the controversy beyond the Avignonese curia.