1. An innumerable host of "wise virgins" like those praised in the Gospel parable we have just heard, have known, throughout the Christian centuries, how to await the Bridegroom with their lamps, well stocked with oil, to participate with him in the feast of grace on earth, and of glory in heaven. Among them, today shines before our gaze the great and beloved Saint Catherine of Siena, splendid flower of Italy, most resplendent gem of the Dominican Order, star of unparalleled beauty in the firmament of the Church, whom we honour here on the sixth centenary of her death, which occurred on a Sunday morning, about the third hour, on 29 April 1380, while the feast of Saint Peter the Martyr, whom she loved so much, was being celebrated.

Happy to be able to give you a first sign of my lively participation in the centenary celebration, I cordially greet all of you, dear brothers and sisters, who, to worthily commemorate the glorious date, have gathered in this Vatican Basilica, where the ardent spirit of the great Sienese woman seems to hover. I greet in a special way the Master General of the Friars Preachers, Father Vincent de Couesnongle, and the Archbishop of Siena, Monsignor Mario Ismaele Castellano, the main promoters of this celebration; I greet the members of the Dominican Third Order and of the Ecumenical Association of the Catholics, the participants in the International Congress of Catholics Studies, and all of you, dear pilgrims, who have travelled so many roads of Italy and Europe to unite yourselves in this centre of Catholicity, on such a beautiful and significant feast day.

2. Today, we look to St Catherine first of all to admire in her what immediately struck those who approached her: the extraordinary richness of her humanity, in no way obscured, but rather increased and perfected by grace, which made her almost a living image of that true and healthy Christian "humanism", the fundamental law of which is formulated by Catherine's brother and teacher, St Thomas Aquinas, in the well-known aphorism: "Grace does not suppress, but supposes and perfects nature" (St Thomas, Summa Theologia, p. 4). Thomas, Summa Theologiae, I, q. 1, a. 8, ad 2). The full-sized man is the one who is realised in the grace of Christ.

When, in my ministry, I insist on drawing everyone's attention to the dignity and values of man, which must be defended, respected and served today, it is above all of this nature that came forth from the hands of the Creator and was renewed in the blood of Christ the Redeemer that I speak: a nature that is good in itself, and therefore healable in its infirmities and perfectible in its gifts, called to receive that "more" that makes it share in the divine nature and in "eternal life". When this supernatural element is grafted into man and can act on him with all its force, we have the prodigy of the 'new creature', which in its transcendent elevation does not annul, but makes richer, denser, firmer everything that is purely human.

Thus our saint, in her nature as a woman endowed with imagination, intuition, sensitivity, volitional and operative vigour, communicative capacity and strength, willingness to give of herself and to service, is transfigured, but not impoverished, in the light of Christ who calls her to be his bride and to mystically identify with him in the depths of 'interior knowledge', as well as to commit herself to charitable, social and even political action, among the great and the small, the rich and the poor, the learned and the ignorant. And she, almost illiterate, becomes capable of making herself heard, and read, and taken into consideration by governors of cities and kingdoms, by princes and prelates of the Church, by monks and theologians, by many of whom she is even revered as 'teacher' and 'mother'.

She is a prodigious woman, who in that second half of the 14th century shows in herself what a human creature is capable of, and - I insist - a woman, the daughter of humble dyers, when she knows how to listen to the voice of the only shepherd and master, and nourish herself at the table of the divine Bridegroom, to whom, as a 'wise virgin', she has generously consecrated her life.

It is a masterpiece of the renewing and elevating grace of the creature to the perfection of holiness, which is also the full realisation of the fundamental values of humanity.

3. Catherine's secret in responding so meekly, faithfully and fruitfully to the call of her divine Bridegroom can be grasped from the same explanations and applications of the parable of the 'wise virgins' that she makes several times in her letters to her disciples. Particularly in the one sent to a young niece who wants to be a 'bride of Christ', she lays down a small summary of spiritual life, which applies especially to those who consecrate themselves to God in the religious state, but is of guidance and direction to all.

"If you want to be a true bride of Christ," writes the saint, "you better have the lamp, the oil and the light."Do you know what is meant by this, my child?".

And here is the symbolism of the lamp: "By the lamp is meant the heart, which must resemble a lamp. Thou seest well that the lamp is wide above, and narrow below: and so is our heart made, to signify that we must always have it wide above, by holy thoughts, holy imaginations, and continual prayer; with the memory always turned to remembering the benefits of God, and especially the benefit of the blood by which we have been recompensed...".

"I also told you that the lamp is narrow below: so also is our heart, to signify that it must be narrow towards these earthly things, neither desiring them nor loving them disorderly, nor coveting them in greater quantity than God wants to give us, but we must thank him always, admiring how sweetly he provides for us, so that we never lack anything..." (Letter 23).

In the lamp you need oil. "The lamp would not be enough if there were no oil in it. And by oil is meant that sweet little virtue of deep humility.... Those five foolish virgins, glorying solely and vainly in the integrity and virginity of the body, lost the virginity of the soul, because they did not bring with them the oil of humility..." (Ibid).

"Finally, it is necessary for the lamp to be lit and for the flame to burn in it: otherwise it would not be enough for us to see. This flame is the light of the most holy faith. I say living faith, because the saints say that faith without works is dead..." (Ibid; cf. Letters 79, 360).

Throughout her life, Catherine actually nourished the lamp of her heart with great humility, and kept the light of faith, the fire of charity, and the zeal of good works done for the love of God burning, even in the hours of tribulation and passion, when her soul reached its greatest conformation to Christ crucified, until one day the Lord celebrated the mystical wedding with her in the small cell where she lived, made all resplendent by that divine presence (cf. Life, nos. 114-115).

If men today, and especially Christians, could rediscover the wonders that can be known and enjoyed in the "inner cell", and indeed in the heart of Christ! Then, yes, man would find himself, the reasons for his dignity, the foundation of his every value, the height of his eternal vocation!

4. But Christian spirituality does not exhaust itself in an intimistic circle, nor does it push towards an individualistic and egocentric isolation. The elevation of the person takes place in the symphony of the community. And Catherine, who keeps the cell of her home and heart to herself, has lived since her youth in communion with so many other children of God, in whom she feels the mystery of the Church vibrate: with the friars of St Dominic, to whom she is united in spirit even when the bell calls them in choir, at night, for matins; with the capes of Siena, among whom she is admitted for the exercise of works of charity and the common practice of prayer; with her disciples, who grow to form around her a cenacle of fervent Christians, who welcome her exhortations to the spiritual life and the incitements to renewal and reform that she addresses to all in the name of Christ; and one can say with the entire 'mystical body of the Church' (cf. Dialogue, can. 166), with whom and for whom Catherine prays, works, suffers, offers herself, and finally dies.

His great sensitivity to the problems of the Church of his time is thus transformed into a communion with the 'Christus patiens' and the 'Ecclesia patiens'. This communion is at the origin of the same outward activity, which at a certain moment the saint is driven to carry out first with charitable action and the lay apostolate in her city, and soon on a broader level, with commitment on a social, political, ecclesial scale.

In any case, Catherine drew from that inner source the courage for action and that inexhaustible hope that sustains her even in the most difficult hours, even when all seems lost, and allows her to influence others, even at the highest ecclesiastical levels, with the strength of her faith and the charm of her person completely offered to the cause of the Church.

At a meeting of Cardinals in the presence of Urban VI, according to the account of Blessed Raymond, Catherine "showed that divine Providence is always present, especially when the Church suffers"; and she did so with such ardour that the pontiff finally exclaimed: "What has the vicar of Jesus Christ to fear, if the whole world were to turn against him? Christ is more powerful than the world, and it is not possible for him to abandon his Church!" (Vita, n. 334).

5. That was an exceptionally serious moment for the Church and the Apostolic See. The demon of division had penetrated the Christian people. Discussions and fights were breaking out everywhere. In Rome itself there were those who plotted against the Pope, not without threatening him with death. The people were rioting.

Catherine, who did not cease to hearten pastors and faithful, felt however that the hour had come for a supreme offering of herself, as a victim of expiation and reconciliation together with Christ. And so he prayed to the Lord: "For the honour of your name and for the sake of your holy Church, I will gladly drink the cup of passion and death, as I have always wished to drink; you are my witness, since, by your grace, I began to love you with all my mind and with all my heart" (Ibid., no. 346).

From then on it began to deteriorate rapidly. Every morning of that Lent of 1380, "she went to the church of St Peter, prince of the apostles, where, having heard mass, she remained long in prayer; she did not return home until the hour of vespers", exhausted. The next day. early in the morning, "starting from the street known as Via del Papa (today St Clare's Street), where she was at home, between Minerva and Campo dei Fiori, she went swiftly to St Peter's, making a journey to tire even a healthy man" (Ibid., no. 348; cf. Letter 373).

But at the end of April, he could no longer get up. He then gathered his spiritual family around his bed. In her long farewell, she declared to her disciples: 'I commit life, death and everything into the hands of my eternal Spouse.... If it pleases him that I should die, hold firm, my dear children, that I have given my life for the holy Church, and this I believe by the exceptional grace which the Lord has granted me' (Ibid., no. 363).

Shortly afterwards she died. She was but 33 years old: a beautiful youth offered to the Lord by the 'wise virgin' who had come to the end of her waiting and service.

We are gathered here, six hundred years since that morning (Ibid., no. 348), to commemorate that death and especially to celebrate that supreme offering of life for the Church.

My dear brothers and sisters, it is consoling that you have come in such great numbers to glorify and invoke the saint on this auspicious occasion.

It is fitting that the humble Vicar of Christ, like so many of his predecessors, should inspire, precede and guide you in paying homage of praise and thanksgiving to her who loved the Church so much, and who worked and suffered so much for her unity and renewal. And I did so wholeheartedly.

Now let me give you a final remembrance, which is meant to be a message, an exhortation, an invitation to hope, a stimulus to action: I take it from the words that Catherine addressed to her disciple Stefano Maconi and to all her companions in action and passion for the Church: "If you will be what you must be, you will set fire to the whole of Italy..." (Letter 368). (Letter 368); indeed, I would add: in the whole Church, in the whole world. Humanity needs this 'fire' even today, and indeed perhaps more today than yesterday. May Catherine's word and example awaken in so many generous souls the desire to be flames that burn and that, like her, are consumed in order to give their brothers and sisters the light of faith and the warmth of charity "that does not fail" (1 Cor 13:8).

[Pope John Paul II, homily VI centenary s. Catherine of Siena, 29 April 1980]