The Trium puerorum is a hymn of praise that the Church has traditionally recommended as part of thanksgiving after Holy Mass. Its words invite the whole of creation to bless the Lord, joining the visible world and the angelic hosts in one great act of worship. The hymn takes its name from the three young Jewish men whose fidelity is recounted in the Book of Daniel: Ananias, Azarias, and Misael, better known by the Babylonian names Shadrach, Meshach, and Abednego.
King Nebuchadnezzar had erected an enormous golden statue and ordered the peoples under his rule to fall down and worship it. Anyone who refused would be thrown immediately into a burning furnace. The decree offered an opportunity to denounce the three young Jews, who held positions in the administration of Babylon but would not serve the king’s gods. When Nebuchadnezzar summoned them, he demanded to know whether the accusation was true and warned them that no god would be able to deliver them from his power.
Their answer revealed complete fidelity to the Lord. They knew that God could save them from the furnace, but they did not make their obedience depend upon being rescued. Even if he allowed them to die, they would not worship the statue. Their confidence was not a bargain by which they would remain faithful only if God rewarded them with safety. They belonged to him, and no threat could alter that allegiance.
Nebuchadnezzar ordered the furnace to be heated far beyond its usual intensity. The flames were so fierce that they killed some of the men who carried out the sentence, yet the three young men remained unharmed. An angel of the Lord came down into the furnace and drove back the flames. In the midst of the fire, the three began with one voice to praise and glorify God: “Blessed are you, O Lord, God of our fathers, worthy to be praised and exalted forever.”
Their hymn expands until it embraces the whole universe. The heavens and the angels, the sun and moon, the rain and dew, the winds and fire, the mountains and seas, the animals and the children of men are all summoned to bless the Lord. Creation becomes a vast choir, and the three young men stand within it as witnesses that nothing can prevent the praise of God. Even the furnace becomes the setting for worship.
From the Furnace to the Liturgy of the Church
The account of the three young men became an important example for the Jewish people during later periods of persecution. In the second century before Christ, many Jews living under Antiochus IV Epiphanes preferred death to infidelity to the Covenant. They could recognize in Ananias, Azarias, and Misael a model of courage and trust in God when political power demanded worship that belonged to him alone.
Christians soon saw a still deeper meaning in their deliverance. The three entered the furnace under sentence of death and emerged unharmed, accompanied by a mysterious heavenly figure. Their passage through the flames was therefore understood as a foreshadowing of Christ’s victory over death. Jesus is the faithful witness who enters the suffering of the Passion and rises in glory. Through his Resurrection, not only humanity but the whole created order begins to be renewed.
The story was highly esteemed in the early Church and frequently appeared in Christian art. Images of the three young men can be found in the catacombs, on tombs, and on reliquaries. Christians facing persecution saw in them an assurance that God remained present with his servants even when he did not remove the trial itself. The furnace could not separate them from him, just as suffering and death could not overcome Christ or those united to him.
The canticle also entered the Church’s liturgical prayer. It became part of the Easter Vigil and appeared in other celebrations in both East and West. By the early Middle Ages, its verses were widely known and translated into various languages. The song belonged naturally within Christian worship because it united several central themes: fidelity under persecution, deliverance through God’s power, the renewal of creation, and the praise offered by the whole Church.
The hymn of the three young men, often called the Benedicite, appears in the Liturgy of the Hours and is still prayed especially at Lauds on Sundays. Its presence in the morning prayer of the Church is especially fitting. At the beginning of a new day, Christians join creation in blessing God and acknowledge that all things come from him and should return to him in praise.
The Trium puerorum also became associated with thanksgiving after Mass. Its presence in the prayers surrounding the Roman Mass can be traced back many centuries, although the precise form of the devotion developed gradually. The canticle was eventually joined to several psalms, verses, and concluding prayers. In some places it was sung during the procession from the altar to the sacristy, while other sources associate it with the priest’s prayers after the sacred mysteries.
By the time of the Roman Missal of 1570, the Trium puerorum had been formally included among the prayers connected with the conclusion of Mass. In missals of the early twentieth century, the priest was directed to recite it after leaving the altar as an act of thanksgiving. This remained the ordinary practice until 1962, when the prayer was removed from the regular conclusion of the Mass and placed among devotions that could be used when appropriate. In later editions of the Missal it no longer appeared in the same prominent place, which helps explain why its close association with thanksgiving after Communion is less familiar today.
A Custom of Thanksgiving
Saint Josemaría had known the Trium puerorum as part of the Church’s liturgical and devotional tradition. In 1932 he wrote that it would be beautiful to conclude the thanksgiving after Mass each day with the antiphon, the canticle of the three young men, the accompanying psalms, and the short prayers that followed. He recognized in this ancient devotion a fitting way to prolong the praise and gratitude of the Eucharistic celebration.
The custom developed gradually in Opus Dei. In 1940, after celebrating Mass in the oratory of the first centre in Madrid, Saint Josemaría indicated that the thanksgiving after Communion would conclude with the prayer En ego and the hymn of the three young men. Several years later, he returned to the matter and asked whether, after a period of personal thanksgiving, the members might pray the antiphon, the canticle, Psalm 150, and the concluding prayers together. The practice eventually became established in the centres of the Work.
The prayer itself was not unique to Opus Dei. It already belonged to the wider liturgical heritage of the Church and was found in the Missal of the period. Saint Josemaría’s contribution was to encourage lay people to make fuller use of it in their thanksgiving after Mass. He wanted them to draw upon the riches of the Church’s prayer and to understand that the liturgy was not something observed from a distance, but the worship of the whole People of God.
The custom also reflects the place of the laity within the life of the Church. The praise offered after Mass is not reserved to priests or religious. Through Baptism, every Christian shares in Christ’s priestly people and is called to offer spiritual worship. The faithful who pray the Trium puerorum join their voices to the Church’s ancient song and give thanks for the Eucharist they have just received.
Saint Josemaría distinguished two complementary moments in the thanksgiving after Mass. The first is personal conversation with God. After receiving Christ in Holy Communion, we should remain for some time in direct and intimate prayer. The Eucharistic sacrifice is itself the great act of thanksgiving, and our personal prayer prolongs that thanksgiving within the heart. We speak to the Father, the Son, and the Holy Spirit, expressing our adoration, gratitude, sorrow, and petition.
The second moment gives a more explicitly ecclesial form to our thanksgiving. Our encounter with Christ in the Eucharist is deeply personal, but it is never merely private. We receive the same Lord who gives himself to the whole Church. No individual can thank him adequately for so great a gift, and so we join our gratitude to that of other Christians. When we pray the Trium puerorum together, we thank Christ not only for having come to us, but for having given himself to all those who have received him.
This common prayer helps us remember that Holy Communion strengthens the communion of the Church. Christ does not unite us to himself in isolation from others. By giving himself to each of us, he draws us more deeply into his Body. The Eucharist continually renews the Church as the communion brought into the world by Christ and intended by the Father from all eternity. Within it lies the beginning of the final unity of all things in heaven and on earth.
The Trium puerorum therefore enlarges our thanksgiving. We may begin with the particular graces we have received, but the hymn draws us beyond ourselves. We praise God with those around us and with Christians throughout the world. We also join the praise of the angels and of the whole created order. Our thanksgiving becomes catholic in the fullest sense: universal, ecclesial, and directed to the glory of the Triune God.
Learning to Praise
The repeated invitation of the Trium puerorum is simple: bless the Lord. The hymn teaches us that every creature has been made to give glory to God. The sun glorifies him by shining, the sea by its vastness, and the mountains by their strength and beauty. Human beings alone can recognize the Creator consciously and offer themselves freely in love. We give voice to the praise that is already inscribed within creation.
The Mass itself is the supreme prayer of thanksgiving and praise. The Eucharistic Prayer begins by lifting our hearts to God and leads into the song of the angels: “Holy, holy, holy Lord God of hosts.” It reaches its summit in the solemn glorification of the Father through Christ, with Christ, and in Christ, in the unity of the Holy Spirit. The Trium puerorum continues this movement after Mass. The Eucharistic celebration has ended, but its spirit of praise is meant to shape the rest of the day.
For this reason, the canticle can be seen as a school in which we learn to relate the whole of creation to God. It teaches us to receive the world neither as something divine in itself nor as raw material existing only for our use. Creation is a gift that reveals the wisdom and generosity of its Maker. When we praise God for the beauty and order of the universe, we learn to use created things with gratitude and respect.
The hymn also helps us order our daily work towards God. After Mass we return to ordinary duties, but we do not leave the Eucharist behind. The praise that began at the altar should enter our work, relationships, and decisions. We can turn the whole day into an offering by trying to perform each task for the glory of God rather than for self-display or personal satisfaction alone.
Saint Josemaría often encouraged Christians to give all the glory to God and to remove from their actions whatever was rooted in pride or self-complacency. This does not mean that we should despise our talents or deny the satisfaction of work done well. It means that we recognize the source of every gift and the purpose for which it has been given. We use our abilities generously, while remembering that the deepest value of our work lies in the love with which it is offered.
The Trium puerorum gathers spiritual and material creation into a single song. It begins with the highest heavens and descends through the elements of the natural world, but its climax is reached among the “humble of heart.” The whole universe praises God by existing according to his design, yet the humble praise him in a special way because they consciously recognize their dependence upon him. Ananias, Azarias, and Misael stand among them. In the furnace, stripped of every earthly security, they know that God alone is worthy of worship.
Their humility is inseparable from courage. They do not deny the power of the king or the danger of the flames, but neither do they treat these things as ultimate. Their confidence rests in God, whether he rescues them visibly or allows them to die. We often ask God to remove the trials that surround us, and it is right to do so. Yet the canticle teaches us that even within the fire we can continue to bless him. His presence may not always spare us from suffering, but it prevents suffering from having the final word.
The Church concludes the Trium puerorum with the Our Father, verses from the psalms, and several prayers. The praise of creation becomes supplication. We ask God to assist us in the trials of life just as he assisted the three young men. We too may find ourselves in the midst of interior struggles, external difficulties, or circumstances we cannot control. The prayer asks that divine help may bring relief and enable us to remain faithful.
Thanksgiving after Mass thus becomes preparation for the day ahead. We have received Christ, praised the Father, and invoked the Holy Spirit. We now ask that the grace of the Eucharist enter the circumstances awaiting us. Our work, suffering, joys, and encounters can all become part of the song begun in the liturgy.
The Trium puerorum teaches us that Christian praise is not reserved for moments when everything is going well. The three young men sang from within the furnace. Their hymn did not arise because they had escaped danger, but because God was worthy of praise even before the outcome was known. This is the deepest lesson of their song. We bless God not only for what he gives us, but because he is good.
When we pray in this spirit, our whole life can gradually become a canticle of thanksgiving. We begin to see creation as a gift, the Church as a communion, and the Eucharist as the source from which our daily offering flows. Like Ananias, Azarias, and Misael, we learn to praise God in prosperity and trial, confident that no fire can separate us from his presence. Our day then becomes, in the words of the original article, a Magnificat to divine mercy.
By the Via Virtutis team
Photo by Jess Zoerb on Unsplash
