Commemoratio: Ss. Marcellini, Petri, atque Erasmi, Episcopi, Martyrum
Introit
Dómine, in tua misericórdia sperávi: exsultávit cor meum in salutári tuo: cantábo Dómino, qui bona tríbuit mihi.
O Lord, I have trusted in Thy mercy; my heart hath rejoiced in Thy salvation: I will sing to the Lord, who giveth me good things. (Ps. 12:6)
The first full week after the Octave of Pentecost opens upon the long expanse of the Time after Pentecost, the season in which the Church, having received the promised Paraclete, learns to live by His charity. The feria borrows its propers from the First Sunday after Pentecost, and the Introit sets the key in which the whole week will be sung: not in the high festal jubilation of Whitsun, but in the quieter and more durable register of trust — in tua misericordia speravi. The heart that has rejoiced in salvation now turns to the daily labour of becoming merciful. Today this temporal observance is joined to the memory of the holy martyrs Marcellinus the priest and Peter the exorcist, who suffered under Diocletian, and Erasmus the bishop, whose witness unto blood is the perfect seal upon the very charity these readings command.
The Epistle: Deus caritas est (1 John 4:8-21)
The Apostle of love does not flatter. When St. John writes that Deus caritas est — “God is charity” (1 John 4:8) — he is not offering a sentiment but a definition that judges us. For he immediately draws the consequence: he that loveth not, knoweth not God; for God is charity. To fail in charity is not merely to fall short of an ideal; it is to be ignorant of God Himself, since charity is the very mode of God’s being and the very gift the Holy Ghost has poured into our hearts (cf. Rom. 5:5).
St. Augustine, preaching upon this Epistle, fixes upon the order of the divine initiative. We did not love first. In hoc est caritas: non quasi nos dilexerimus Deum, sed quoniam ipse prior dilexit nos — “In this is charity: not as though we had loved God, but because He hath first loved us” (1 John 4:10). Augustine marvels that the love of God is the cause and not the consequence of any goodness in us: God loved us while we were yet unlovely, that He might make us lovely; He loved the sick that He might heal them, the unjust that He might justify them. “He loved us,” Augustine says in his Tractatus in Epistolam Ioannis, that we, being loved, might love in turn — ut diligeremus invicem. The whole movement of the spiritual life is therefore a return, never an origination.
Here the Apostle presses the conclusion that today’s Gospel will dramatize. If God hath so loved us, we also ought to love one another (1 John 4:11). The invisible God, whom no man hath seen, becomes visible in the charity of the brethren: Deum nemo vidit umquam. Si diligamus invicem, Deus in nobis manet — “No man hath seen God at any time. If we love one another, God abideth in us, and his charity is perfected in us” (1 John 4:12). St. Augustine seizes upon this with characteristic boldness: thou wast asking to see God; love thy brother, and thou hast seen God — for God is charity, and where charity dwells, there God is seen, not with the eye of the flesh but in the substance of the soul that loves.
The Venerable Bede, in his commentary on the Catholic Epistles, draws out the casting-out of fear: Timor non est in caritate, sed perfecta caritas foras mittit timorem — “Fear is not in charity: but perfect charity casteth out fear” (1 John 4:18). Bede distinguishes the servile fear that dreads punishment from the chaste and filial fear that endures forever (cf. Ps. 18:10). Perfect charity does not abolish reverence; it expels only that craven dread which has torment in it, the fear proper to one who still regards God as a master to be appeased rather than a Father to be loved. As charity grows, fear diminishes — not because the soul becomes presumptuous, but because love has made it secure in the One it loves.
Finally St. John forecloses every evasion. If any man say, I love God, and hateth his brother, he is a liar (1 John 4:20). The argument is unanswerable: he that loveth not his brother whom he seeth, how can he love God whom he seeth not? The brother set before our eyes is the appointed sacrament of the God hidden from them. To despise the visible image is to have already rejected the invisible Original.
The Gospel: Estote misericordes (Luke 6:36-42)
The Gospel translates the Epistle’s doctrine into a precept and a measure. Estote ergo misericordes, sicut et Pater vester misericors est — “Be ye therefore merciful, as your Father also is merciful” (Luke 6:36). The pattern of our mercy is not human prudence but the divine clemency itself; the standard is nothing less than the Father, who maketh his sun to rise upon the good and bad (cf. Matt. 5:45).
St. Ambrose, expounding St. Luke, observes that the Lord proceeds at once from mercy to its conditions: Nolite iudicare, et non iudicabimini — “Judge not, and you shall not be judged; condemn not, and you shall not be condemned” (Luke 6:37). Ambrose warns that the rash judge usurps an office reserved to God, who alone discerns the secrets of hearts. Yet he is careful, as the Fathers always are, to distinguish the forbidden judgment of presumption from the necessary discernment of charity: we are not commanded to abolish prudence, but to abandon the proud verdict that condemns the brother while excusing the self.
The Lord then promises a generosity that overflows: Date, et dabitur vobis: mensuram bonam, et confertam, et coagitatam, et supereffluentem dabunt in sinum vestrum — “Give, and it shall be given to you: good measure and pressed down and shaken together and running over shall they give into your bosom” (Luke 6:38). St. Bede notes the homely vividness of the image, drawn from the marketplace where grain is poured, pressed, and shaken so that the measure may hold all it can and spill beyond. Eadem quippe mensura qua mensi fueritis, remetietur vobis — “for with the same measure that you shall mete withal, it shall be measured to you again.” The reciprocity is exact: God will deal with us according to the measure we have used toward our brethren. The miser of mercy receives a miser’s portion; the prodigal of charity is repaid in abundance running over.
Then comes the parable that exposes the inner deceit of the uncharitable. Numquid potest caecus caecum ducere? nonne ambo in foveam cadunt? — “Can the blind lead the blind? Do they not both fall into the ditch?” (Luke 6:39). St. Cyril of Alexandria, whose homilies on St. Luke the Catena Aurea preserves, applies this first to the blind guides of the synagogue who, themselves unenlightened, presumed to lead others; but the warning falls upon every man who would correct his brother while himself sitting in darkness. The disciple is not above his master; only when he is perfectly formed will he be as his master (Luke 6:40).
The climax is the famous figure of the mote and the beam. Quid autem vides festucam in oculo fratris tui, trabem autem quae in oculo tuo est non consideras? — “And why seest thou the mote in thy brother’s eye: but the beam that is in thy own eye thou considerest not?” (Luke 6:41). St. Augustine treats this with surgical precision. The fault we are so eager to extract from another is the festuca, the little splinter; the fault we ignore in ourselves is the trabes, the great beam — and Augustine identifies the beam most often as the vice of pride or malice that corrupts the very act of correction. For he who corrects in anger or contempt has the beam of hatred in his own eye, and his correction, however accurate, is blinded by it. The Lord does not forbid the removal of the brother’s mote; He forbids only that we attempt it while blinded. Hypocrita, eiice primum trabem de oculo tuo — “Hypocrite, cast first the beam out of thy own eye, and then shalt thou see clearly to take out the mote from thy brother’s eye” (Luke 6:42). Fraternal correction is not abolished but purified: cleanse the eye of charity first, and then the surgery of love may proceed.
Theological Synthesis
The Epistle and the Gospel form a single seamless teaching, and the liturgy has not joined them by accident. St. John gives the principle: God is charity, He loved us first, and the visible proof of our love for the invisible God is our love for the visible brother. St. Luke gives the practice: be merciful as the Father is merciful, judge not, give freely, and correct only when your own eye is clear.
The hinge between them is the great Augustinian theme of imitation. Charity is not merely commanded; it is communicated. The Holy Ghost, whose coming we have just celebrated, is Himself the Donum — the Gift who is the mutual Love of the Father and the Son — poured into our hearts to make us capable of the very mercy that is God’s own. Hence the precept be ye merciful as your Father is merciful is not the imposition of an impossible standard but the unfolding of a gift already given. We become what we behold: gazing upon the Father’s mercy, and receiving His Spirit, we are conformed to that mercy.
This is why the casting-out of fear and the casting-out of the beam belong together. The beam in the eye is, at bottom, the residue of that servile fear which still curves the soul back upon itself — self-justifying, quick to condemn, slow to give. Perfect charity, which casts out fear, also clears the eye. The merciful man judges rightly because he no longer judges from the throne of his own anxious pride, but from the security of one who knows he has been loved first.
The martyrs commemorated today are the living commentary upon this doctrine. Marcellinus, Peter, and Erasmus did not merely speak of charity casting out fear; they proved it, going to their deaths without that torment which fear inflicts, because perfect charity had already possessed them. Greater love than this no man hath, that a man lay down his life for his friends (John 15:13). The bishop and the priest and the exorcist became, in their passion, the visible image of the invisible God whom they loved.
Devotional Application
First, examine the measure. Our Lord promises that we shall be measured by the measure we use. Before this day’s end, consider one person toward whom your measure has been stingy — in patience, in forgiveness, in the benefit of the doubt — and resolve to pour out toward him good measure, pressed down and running over. Mercy is learned not in the abstract but in the particular brother set before us.
Second, attend to the beam before the mote. Where you are most eager to correct another, suspect first your own eye. This week, before offering any correction, however just, pause to ask what beam of pride, irritation, or self-love may be obscuring your sight. Cleanse it in confession and in prayer, that your correction may proceed from charity and not from contempt.
Third, make the act of charity a return, not an origin. Recall daily that you did not love first — ipse prior dilexit nos. Begin your morning prayer by acknowledging that whatever charity you will show this day is the overflow of a love already received. This single recollection dissolves both the pride that condemns and the servile fear that torments, leaving only the freedom of the children of God.
Collect
Deus, in te sperántium fortitúdo, adésto propítius invocatiónibus nostris: et, quia sine te nihil potest mortális infírmitas, præsta auxílium grátiæ tuæ; ut, in exsequéndis mandátis tuis, et voluntáte tibi et actióne placeámus. Per Dóminum nostrum Iesum Christum.
O God, the strength of all them that hope in Thee, mercifully accept our prayers; and because through the weakness of our mortal nature we can do no good thing without Thee, grant us the help of Thy grace, that in keeping Thy commandments we may please Thee both in will and deed. Through our Lord Jesus Christ.
And for the martyrs, the commemoration:
Deus, qui nos ánnua beatórum Mártyrum tuórum Marcellíni, Petri atque Erásmi solemnitáte lætíficas: concéde propítius; ut, quorum gaudémus méritis, accendámur exémplis. Per Dóminum.
O God, who dost gladden us by the yearly solemnity of Thy blessed Martyrs Marcellinus, Peter, and Erasmus: mercifully grant that we who rejoice in their merits may be enkindled by their example. Through our Lord.
For Further Study
- Sacred Liturgy — The Time after Pentecost and the green vesture of the long season: how the Church passes from the celebration of the mysteries to the living-out of charity in ordinary time.
- Theology and Doctrine — Charity as the form of the virtues in the Summa Theologiae (II-II, qq. 23-27), where St. Thomas, following St. Augustine and the Apostle John, treats charity as friendship with God and the root of all merciful action.
- Lives of the Saints — The Roman witness of Ss. Marcellinus and Peter, whose passion St. Damasus recorded from the lips of their own executioner, and of St. Erasmus, venerated among the Fourteen Holy Helpers.
A note on the patristic citations: the homily and tractate numbering of Augustine, Ambrose, Bede, and Cyril varies across the Patrologia Latina/Graeca, the Benedictine editions, and modern critical texts; the Catena Aurea should be consulted for the precise sigla before these references are fixed in print.
If you wish to go deeper, the Theology and Doctrine path will guide you, by way of the Angelic Doctor, into the heart of charity — that you may understand in doctrine what this day’s liturgy commands in practice: to be merciful, as your Father is merciful.