Sodomy
St. Alphonsus Liguori (1696–1787), a Doctor of the Church and the patron saint of moral theologians, is often cited for his rigorous yet pastoral approach to ethics. To understand his condemnation of homosexuality, one must view it through the lens of 18th-century Moral Theology, specifically his seminal work, Theologia Moralis.
1. The Theological Framework
Sant' Alfonso did not view morality through modern psychological lenses; rather, he operated within the Natural Law tradition. In his view, the primary "end" or purpose of the sexual faculty was procreation within a valid marriage.
Anything that deviated from this purpose was classified under the broad category of lust (luxuria). He categorized same-sex acts as peccatum contra naturam (sins against nature), which he considered the most grievous sub-species of lust because they inherently frustrated the biological and divine design of the sexual act.
2. Categorization in Theologia Moralis
In his writings, saint Alphonsus follows the scholastic tradition of ranking sexual sins. He generally identifies four types of "sins against nature":
Pollution (Self-abuse)
Sodomy (Same-sex intercourse)
Bestiality
Onanism (Contraceptive acts)
Among these, he identifies sodomy as a "crying sin" (peccatum clamans), echoing biblical language regarding the "sin of Sodom" reaching the ears of God. He describes these acts as "unspeakable" or "vile," reflecting the common ecclesiastical vocabulary of his era.
3. The Gravity of the Sin
Saint Liguori's condemnation was absolute in terms of the objective gravity of the act. He argued that:
Divine Offense: It is a direct violation of the order established by the Creator, a mortal sin leading the unrepented soul to hell.
Moral Blindness: He believed that habitual indulgence in such sins darkened the intellect and hardened the heart against grace more rapidly than other "natural" sins (like simple fornication).
Social Harm: While he focused on the soul, he also viewed such acts as a threat to the common good and the sanctity of the Christian family.
4. The Role of the Confessor
Despite his harsh language, saint Alphonsus was the founder of Equiprobabilism, a system meant to steer a middle course between legalism (laxity) and rigorism (Jansenism).
When addressing "shameful sins" in the confessional, his instructions to priests were nuanced:
Discretion: He warned confessors to be extremely careful and "prudent" when questioning penitents about these sins to avoid teaching the innocent about vices they did not yet know.
Empathy vs. Firmness: He urged priests to be "fathers" to the penitent, showing compassion for the struggle with temptation while remaining unyielding regarding the necessity of "firm purpose of amendment" (the intent to stop the behavior).
"The minister of God must be a lion in the pulpit to terrify the sinner, but a lamb in the confessional to receive him." — General maxim of St. Alphonsus.
5. Summary of Perspective
For St. Alphonsus Maria de Liguori, the condemnation of homosexuality was not a personal vendetta but a logical necessity of his moral system. He viewed it as a profound disorder that required deep repentance, frequent reception of the Sacraments, and a "flight from the occasions of sin."
His work remains the standard reference for traditional Catholic moral teaching on the subject, emphasizing that while the act is to be condemned as a grave evil, the sinner is a soul in need of the "Great Means of Salvation"—prayer and the mercy of God.
