The Pentecostal Fast

Hodiernam, dilectissimi, festivitatem descensione sancti Spiritus consecratam sequitur, ut nostis, solemne jejunium, quod animis corporibusque curandis salubriter institutum, devota nobis est observantia celebrandum. Repletis namque apostolis virtute promissa, et in corda eorum Spiritu veritatis ingresso, non ambigimus inter caetera coelestis sacramenta doctrinae, hanc spiritalis continentiae disciplinam de Paracleti magisterio primitus fuisse conceptam: ut sanctificatae jejunio mentes conferendis sibi charismatibus fierent aptiores. Aderat quidem Christi discipulis protectio omnipotentis auxilii, et principibus nascentis Ecclesiae tota Patris Filiique Divinitas in praesentia sancti Spiritus praesidebat. Sed contra instantes impetus persequentium, contra minaces fremitus impiorum, non corporis fortitudine, nec carnis erat saturitate certandum; cum hoc maxime hominis interiora corrumpat, quod exteriora delectat; et tanto fiat rationalis anima purgatior, quanto fuerit substantia carnis afflictior. Hi itaque doctores, qui exemplis et traditionibus suis omnes Ecclesiae filios imbuerunt, tirocinium militiae christianae sanctis inchoavere jejuniis: ut contra spiritales nequitias pugnaturi, abstinentiae arma caperent, quibus vitiorum incentiva truncarent. Invisibiles enim adversarii et incorporales hostes non erunt contra nos validi, si nullis carnalibus desideriis fuerimus immersi. Cupiditas quidem nocendi in tentatore perpetua est, sed inermis atque inefficax erit, si nihil in nobis unde contra nos pugnet invenerit. Quis autem hac fragili carne circumdatus, et in isto mortis corpore constitutus, etiam qui multum valideque profecerit, ita jam de sua salute securus sit, ut ab omnium se illecebrarum periculo credat alienum? Donet licet sanctis suis quotidianam gratia divina victoriam, non aufert tamen dimicandi materiam: quia et hoc ipsum de misericordia protegentis est, qui naturae mutabili, ne de confecto praelio superbiret, semper voluit superesse quod vinceret. Igitur post sanctae laetitiae dies, quos in honorem Domini a mortuis resurgentis, ac deinde in coelos ascendentis, exegimus, postque perceptum sancti Spiritus donum, salubriter et necessarie consuetudo est ordinata jejunii: ut si quid forte inter ipsa festivitatum gaudia negligens libertas et licentia inordinata praesumpsit, hoc religiosae abstinentiae censura castiget: quae ob hoc quoque studiosius exsequenda est, ut illa in nobis quae hac die Ecclesiae divinitus sunt collata permaneant. Templum enim facti Spiritus sancti, et majore quam umquam copia divini fluminis irrigati, nullis debemus concupiscentiis vinci, nullis vitiis possideri, ut virtutis habitaculum nulla sit contaminatione pollutum. Quod utique regente atque adjuvante Domino omnibus obtinere possibile est, si per jejunii purificationem, ac per misericordiae largitatem studeamus et peccatorum sordibus liberari, et charitatis fructibus esse fecundi. Quidquid enim in cibos pauperum, in curationes debilium, in pretia captivorum, et in quaelibet opera pietatis impenditur, non minuitur, sed augetur, nec umquam apud Deum perire poterit quod fidelis benignitas erogarit, dum quodcumque tribuit ad subsidium, id sibi recondit ad praemium. Beati enim misericordes, quoniam ipsorum miserebitur Deus; neque delictorum memoria erit ubi testimonium pietatis affuerit. Quarta igitur et sexta feria jejunemus; sabbato autem apud beatissimum Petrum apostolum vigilias celebremus, cujus nos orationibus et a spiritalibus inimicis et a corporeis hostibus confidimus liberari. Per Dominum nostrum Jesum Christum, qui cum Patre et Spiritu sancto vivit et regnat in saecula saeculorum. Amen. Sanctus Leo Magnus, Sermo LXXVIII, De Jejunio Pentecostes I Source: Migne PL 54.415b-418a

Today's feast, dearly-beloved, consecrated by the descent of the Holy Spirit, is followed, as you know, by a solemn fast, which being a salutary institution for the healing of soul and body, we should attend to with devout observance. For when the Apostles had been filled with the promised power and the Spirit of Truth had entered into their hearts, we do not doubt that among the rest of the mysteries of heavenly teachings this discipline of spiritual continence was first thought of at the prompting of the Paraclete so that minds sanctified by fasting might be more fit for the chrism which was to be bestowed on them. The disciples of Christ had the protection of Almighty aid, and the princes of the infant Church were watched over by the whole Godhead of the Father and the Son by the presence of the Holy Spirit. But against the threatened assaults of persecutors, and against the terrifying cries of the impious, they could not struggle with bodily strength or with pampered flesh, since that which delights the outer man gravely corrupts the inner man, and the more one's fleshly substance is afflicted the more the rational soul is purified. Thus these teachers, who have imbued all the sons of the Church with their example and their traditions, established the rudiments of Christian warfare with holy fasts, so that having to fight against spiritual wickedness men might take up the armour of abstinence to cut off the incentives to vice. Invisible adversaries and incorporeal enemies will have no power over us if we are not entangled in any of the desires of the flesh. Certainly the tempter always desires to hurt us, but he will be disarmed and powerless if he can find nothing in us by which he might attack us. But encompassed with this frail flesh and established in this body of death, even if a man has made evident progress, who can be so certain of his safety so that he thinks himself far from the peril of all allurements? Although Divine Grace gives daily victory to its holy ones, it does not remove the need for struggle, because even this is part of His protecting mercy, He who, lest we become proud over a battle ended, has always designed for our changeable nature that they should be something to win. Therefore, after the days of holy joy which we have devoted to the honour of the Lord rising from the dead and then ascending into heaven, and after the reception of the gift of the Holy Spirit, a fast is ordained as a wholesome and needful practice so that if through neglect or disorder amid the joys of the feast any undue license has come about it may be corrected by the censures of holy abstinence, which must be most scrupulously carried out so that what was on this day Divinely bestowed on the Church may remain in us. For having been made the temple of the Holy Spirit and watered with a greater supply than ever of the Divine Stream, we should not be conquered by any desires, nor possessed by any vices, by which the habitation of virtue is defiled with pollution. And it is possible for everyone to obtain this with the Lord's aid and guidance, if by the purification of fasting and by merciful liberality we strive to be freed from the filth of sins and to be rich in the fruits of love. For whatever is spent on feeding the poor, on caring for the sick, on ransoming prisoners, or on any other deed of piety, is not diminished but increased, nor will what the kindness of one of the faithful has expended ever be lost to God, since whatever a man gives for relief he lays up for his own reward. For 'Blessed are the merciful, since God shall have mercy on them.' 1 Nor will errors be remembered where the witness of piety is present. On the fourth and and sixth days, therefore, let us fast, and on Saturday let us keep vigil in the presence of the most blessed Apostle, Peter, by whose prayers we surely trust to be set free both from spiritual foes and bodily enemies, through our Lord Jesus Christ, who with the Father and the Holy Spirit lives and reigns for ever and ever. Amen. Pope Leo the Great, Sermon 78, On The Pentecostal Fast 1 Mt 5.7