May 2026 Print

By John A. Monaco

“He seemed to gaze everywhere upon Jesus Christ Crucified and Suffering, and to dwell in His wounds.”¹ With these words, Pope Sixtus V not only extolled St. Bonaventure (1221–1274) for his spiritual vision but also held him up as a sure and reliable guide to Catholic teaching. In declaring St. Bonaventure a “Doctor of the Church” (doctor ecclesiae), Sixtus V elevated one of St. Thomas Aquinas’s contemporaries to the highest degree conferred to a theologian. Flowing from their sanctity and theological excellence, both Aquinas and Bonaventure are notable for their Eucharistic devotion. A pious legend illustrates this fact. In 1264, Pope Urban IV instituted the Feast of Corpus Christi and commissioned two of the Middle Ages’ greatest minds—the Dominican Thomas Aquinas and the Franciscan Bonaventure—to compose its liturgy. The Pope intended to evaluate both submissions and select the definitive text for the universal Church. On the day of the contest, Aquinas presented first. As he read his verses, the sublime beauty of the prose deeply moved everyone present. Bonaventure, overwhelmed by the conviction that Thomas was speaking through the Holy Spirit, felt his own work was unworthy of comparison. In an act of legendary humility, he secretly shredded his manuscript beneath his habit while Thomas spoke. When summoned to present, Bonaventure revealed the torn papers, confessing that it would be “sacrilege” to place his “weak work” beside such a masterpiece. Deeply touched by this “holy emulation,” Urban IV chose Aquinas’s liturgy. This decision gifted the Church with iconic hymns like the Pange Lingua (containing the Tantum Ergo), Lauda Sion, and Adoro te Devote.

In light of this story, one might be tempted to thus disregard Bonaventure’s Eucharistic theology as second-rate. However, that would be a mistake. St. Bonaventure’s Eucharistic theology is centered on Christ crucified, an image so dear to his Franciscan Order, and also gives important insights into the Eucharistic species and the spiritual life. For these reasons, St. Bonaventure’s writings on the Eucharist deserve fuller attention, especially for those who hastily suggest that medieval “Eucharistic theology” was merely obsessing over Aristotelian categories of ‘substance’ and ‘accidents.’ As we will discover, Bonaventure’s Eucharistic theology is characterized by a Christocentric understanding of the evangelical counsels, that of poverty, chastity, and obedience. A truly Bonaventurean Eucharistic theology is one that emphasizes the poverty, chastity, and obedience of Christ in His manner of life and in the Sacrament of the Eucharist itself, which then invites the communicant into union with Christ by following His example.²

Poverty in the Eucharist

St. Bonaventure’s theology is deeply rooted in the Franciscan tradition, which “keeps its eyes fixed upon Christ” as the ultimate center of the Trinity, the created order, and the intellectual life. In this framework, poverty (paupertas) is not merely a lack of resources, but a foundational Christological and sacramental principle. Bonaventure views the Incarnation as the primary act of divine poverty. Following the Fall, humanity was “blinded” by sin and unable to love divine goodness. To remedy this, the Second Person of the Trinity performed an act of kenosis—an outpouring or self-emptying. By assuming the “nature of a slave,” Christ acted as a mediator, touching both the divine and the human. While God’s nature is defined by a superabundance of love, the Incarnation represents a “fitting” impoverishment where the Word became bound to time and space. This “divine condescension” was designed so that humanity might inherit everlasting riches through Christ’s assumed poverty.

The same humility found in the Incarnation is extended to the Eucharist. Bonaventure argues that Christ’s substantial presence in the bread and wine is an act of extreme mercy and “highest regard,” even for the wicked who receive Him. This sacramental presence manifests poverty in two ways: the poverty of appearance and the poverty of the intellect. In the former, the “Lord of majesty” is veiled under the “meager and poor garment” of simple wheat bread and wine. This simplicity secures the “merit of faith,” as the truth is hidden from the physical senses. In the latter, the human person experiences a “poverty of language” and understanding. The intellect is “humbled and captivated,” forced to believe a mystery it cannot empirically verify. Bonaventure’s defense of the Franciscan lifestyle centers on the “imitation of the poor Christ.” He distinguishes between involuntary poverty (an evil resulting from injustice) and voluntary poverty (a virtue and a “remedy” for sin). In his Defense of the Mendicants, Bonaventure justifies the friars’ lifestyle through several key distinctions. First, he distinguishes between dominium (legal ownership) and usus (the licit use of necessary items). He argues that Christ and the Apostles renounced all ownership while still utilizing what was necessary for survival. Second, he distinguishes between avarice and possession: the goal of evangelical poverty is to destroy avarice (disordered attachment to material goods) rather than to condemn wealth itself. Voluntary poverty serves as a “temporal exemplar,” mirroring Christ’s life from the manger to the nakedness of the Cross. This radical detachment grants the preacher credibility and eliminates “near occasions of sin.”³ Bonaventure’s theology follows an exitus-reditus (emanation and return) pattern. Poverty begins with God’s self-emptying in the Incarnation, is made accessible through the humility of the Eucharist, and is returned to God through the voluntary poverty of the believer. Ultimately, for Bonaventure, to be poor is to acknowledge that God is the “rightful owner of all earthly things” and the giver of “every good and perfect gift.” This cycle of poverty is what leads the soul into the “very heart of the mystery of God.”

Chastity in the Eucharist

Bonaventure’s exploration of chastity (castitas) begins not as a list of prohibitions, but as a profound theological integration. Drawing from the Catholic tradition, he defines chastity as the successful integration of sexuality within the person, fostering an inner unity of both bodily and spiritual being. In Bonaventure’s Christology, Christ serves as the Exemplar—the master, model, and guide who enables this integration. Through divine illumination, the human soul acts like a mirror reflecting the radiating light of the divine essence. Christ, as the archetype of creation, purifies and perfects the “holy soul” as His spouse, ordering the human person toward the life of the Trinity.

At the heart of this chaste love is the Trinity itself. Bonaventure views the Triune God as a dynamic union of love where the “fecundity of goodness” diffuses perfectly. This is a communal love: a “beloved and a co-beloved” sharing a spiration of love. This Trinitarian relation mirrors marital love but finds its center in the Word. Because the Word is the internal expression of God’s goodness, the Incarnation becomes the external objectification of that love. By assuming human flesh, Christ restores the human person fractured by sin. He heals the “disintegrated” state of humanity, restoring innocence and “purity of soul.” Unlike fallen humans, Christ possessed a fullness of integration, free from concupiscence, where His intellect and senses were in perfect harmony.

In the realm of the Eucharist, chastity manifests as a purity of faith and intention. Bonaventure emphasizes that the communicant must be “set aflame with love,” approaching the sacrament with a soul free from the “stains” of mortal sin. This Eucharistic love has a distinctively nuptial flavor; the recipient is transformed into Christ’s Body, entering a “pure friendship” that extends to the wider community. The sacrament is the means by which the union between the soul and God deepens, penetrating the recipient’s being and uniting him to the “oneness of the Head.” When treating chastity as an evangelical counsel, Bonaventure establishes a hierarchy of perfection: 1) conjugal purity, which is commendable and lawful, serving as a “sacramental remedy” against lust; 2) widowed continence, which is a higher embracing of divine counsel through vowed restraint; and 3) virginity/vowed chastity, which is the “perfect” state that abstains from the goods of marriage to more closely imitate Christ’s own manner of life.

Bonaventure famously defends Christ’s actions against critics by distinguishing between “perfect” and “imperfect” acts. He argues that even Christ’s “imperfect” actions—like using a coin purse—were acts of divine condescension and charity, not sin. For Bonaventure, the evangelical counsel is a way to conform to Christ to the highest degree. This conformity is like light striking a stained-glass window: just as light diffracts into many colors, the divine light emanates through the Word and expresses itself in a myriad of “perfections” across different states of life. Ultimately, chastity for Bonaventure is about reclaiming a single-minded focus on God, restoring the integrity of the soul so it may truly imitate Christ’s divine love.

Obedience in the Eucharist

For Bonaventure, obedience is the actual heavy lifter of the Franciscan life, appearing in St. Francis’s writings even more frequently than the famous hallmark of poverty. He frames obedience as the ultimate act of discipleship, rooted in a radical denial of the “self.” To understand why this matters, Bonaventure looks back at the Fall: sin was not only a mistake, but a fundamental disobedience where humans chose their own “delight” over God’s law. This initial rebellion led to a grim fourfold penalty for humanity—weakness, ignorance, malice, and concupiscence. The Incarnation, then, is the “medicinal” response; the Word, who is eternally obedient to the Father, enters time to restore what was fractured. Christ’s human life serves as the perfect “temporal exemplar” of this virtue. He didn’t just follow orders; he lived a life of “fully satisfactory obedience,” achieving the alignment with the Father that Adam lost. This reached its zenith at the Crucifixion, where Christ became “obedient unto death” (Phil 2:8). Bonaventure emphasizes that surrendering one’s will is the “greatest sacrifice” possible, far exceeding the surrender of physical goods. This cruciform love stretches both upward to the Father and outward to humanity. By observing Christ’s subjection—even to Mary, Joseph, and his own torturers—the Catholic faithful find a clear roadmap to virtue through imitation.

This theme carries directly into the Eucharist. Each celebration is a direct response to Christ’s command to “do this in remembrance of me,” making the liturgy an exercise in obedience to both Christ and the Church’s prescribed rubrics. Bonaventure argues that the priest’s words carry efficacy precisely because they are spoken in obedience. Even the act of faith itself requires the intellect to be “captivated” by obedience, acknowledging a reality that the senses cannot verify. This commitment to order extends to the institutional Church; Bonaventure famously provides twenty-four distinct arguments for obedience to the Pope as the visible sign of unity, mirroring Christ’s invisible role as the head. As an evangelical counsel, obedience is a “public immolation of self-will.” While all Christians follow divine precepts, those seeking “perfection” use the counsel to root out the vice of disobedience through its opposite. It is the necessary partner to poverty; surrendering your possessions is one thing, but surrendering your ego is the real “banquet of the perfect.” Ultimately, for Bonaventure, it is about a healing transformation of the will that allows the soul to finally align with its true, God-deigned purpose.

Conclusion

While St. Bonaventure’s Eucharistic poetry may not have won Pope Urban IV’s favor for the Corpus Christi office, his Eucharistic theology blends dogmatic theology with applicability for Catholic living. His is a theology which flows into concrete action. By analyzing poverty, chastity, and obedience through a Eucharistic lens, we not only gain greater insight into Christian perfection, but we also receive the ability to live it out through devotion to the Eucharist.

Endnotes

¹ Sixtus V, Decretal Letter on St. Bonaventure, Triumphantis Hierusalem (March 4, 1588), §2, found in Opera Omnia S. Bonaventurae (Quaracchi, 1882) vol. I., pp. xlv-lii.

² Bonaventure, Bonaventure on the Eucharist: Commentary on the ‘Sentences’, Book IV, dist. 8-13, trans. Junius Johnson, Dallas Medieval Texts and Translations 23 (Leuven: Peteers, 2017).

³ Kevin L. Hughes, “Bonaventure’s Defense of Mendicancy” in ed. Jay M. Hammond, J.A. Wayne Hellmann, and Jared Goff, A Companion to Bonaventure (Boston: Brill, 2013), 535.

TITLE IMAGE: Real Presence in the Holy Sacrament, Peter Paul Rubens (1577–1640).