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Trinity Sunday ✝️ | What is The Trinity Sunday?

The descent of the Spirit upon the Apostles, the gifts and graces they received on Trinity Sunday. And the preaching and baptism of the first people constitute the foundation of the Christian Church, both as a community of believers and as an institution. After the Holy Apostles received the Holy Spirit, they began casting lots to preach the Gospel of salvation. And faith in Jesus Christ in all parts of the world, starting in Jerusalem. Thus, through the Holy Apostles, the Holy Spirit was transmitted to the world through the Holy Mysteries and celebrated in the Church by priests and bishops.

The Catholic Church celebrates the Holy Trinity Sunday on the Sunday after Pentecost. We celebrate the mystical reality of one God in the unity of the Love of three distinct, equal. And indivisible persons, Father, Son, and Spirit. On the Holy Trinity, the Church celebrates the Holy Spirit, the third person of the Holy Trinity. As indicated by the Pentecostal, at the Sinai of the Pentecost Monday: “On this day we celebrate the Most Holy and Life-giving and all-powerful Spirit. Who is one of the Trinity God.”

This newer name probably represents a Catholic influence (among Catholics, the Holy Trinity is celebrated on the first Sunday after Pentecost). In the cent. In the 12th century, such a celebration was not yet widespread in the West but was regarded in some monasteries as an innovation; it was only definitively established in 1334.

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What is the Trinity?

Jesus confirms that God is “the only Lord” and that we are to love him “with all our heart, with all our soul, with all our mind, and with all our strength.” At the same time, he implies that he is the “Lord.” The confession that “Jesus is Lord” is characteristic of the Christian faith, and this is not contrary to trust in the One God. Believing in the Holy Spirit, “who is Lord and who gives life,” does not introduce any division in the one God.

God is one; at the same time, God is Father, Son, and Holy Spirit. This is what Christians call the Trinity. Tri-unity: tri (three persons); unity (making one God). The whole Bible tells us that “God is love.” How could he love if he was alone? If God is Love, it is because God is one. But he is not alone. There is a communion of Love between the Father, the Son, and the Holy Spirit. This Love that unites the Father and the Son is the Holy Spirit. This Love is so present and consistent that it is a “divine person.”

Christians firmly believe and affirm that there is one true, immeasurable. And immutable, incomprehensible, Almighty and ineffable God, Father and Son, and Holy Spirit: Three Persons, but one elementary Essence, Substance or Nature.

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What is Trinity Sunday in the Bible?

Among Catholics, theologians say, the Holy Trinity is celebrated on the first Sunday after Pentecost. In the calendars of the other Orthodox Churches, the Monday after Pentecost is called the Monday of the Holy Spirit, as in Pentecost.

In the Bible, Holy Trinity Sunday is celebrated on the Sunday after Pentecost. And it recalls Christ’s words to the apostles, “Go and be baptized in the name of the Father and of the Son and the Holy Spirit.” At the Second Ecumenical Council, held in 381 in Constantinople. The teaching of Macedon that the Holy Spirit is a “creature” was rejected. Here the other articles of the Creed were made up, and it was confessed that the Holy Spirit proceeds from the Father and “is with the Father and the Son worshipped and magnified.”

It is an opportunity for us to discover better the very mystery of God: Father, Son, and Holy Spirit. And become more aware of His great goodness. Indeed, “God so loved the world that He gave His only Son. That whoever believes in Him should not perish but have eternal life. (John 3:16)

Read also: Why is Pentecost called Whitsunday?

How is the date of Trinity Sunday decided?

Trinity Sunday is also the feast of the founding of the Christian Church on the same day. Following the inspired Word of the Apostle Peter, some 3,000 souls were converted to Christianity, which formed the first Christian community in Jerusalem (Acts II, 41), the nucleus of the later Church.

The date of the Trinity Sunday is decided and calculated by the Papacy of the Vatican by adding to Easter Sunday several 50 days or 51 days and lasts seven and eight days.

There is no doubt that Trinity Sunday is the oldest Christian feast, along with Easter. They have been celebrated since the time of the Holy Apostles as an extension of the corresponding Jewish feast. St. Paul and St. Luke also mention it. It is also numbered in the Apostolic Constitutions. Among the dinners, enslaved people are to be released from their duties.

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When did Holy Trinity Sunday appear?

The Feast of the Trinity has found its way into church liturgy since the 9th century. At that time, it was first celebrated in Benedictine monasteries.

Holy Trinity Sunday was officially introduced into the Catholic Church in 1334 and placed on the second Sunday after Pentecost. In many Catholic regions, this festival is celebrated with solemn processions.

The liturgical color for this feast is white, the color of purity.

Trinity Sunday

Representation of the Holy Trinity

Who celebrates Holy Trinity Sunday?

This festival of ideas goes back to the disputes that began in the Church with Arianism in the 3rd century. Arianism preached a strict monotheism that did not equate Christ, the Son of God, with God and was defeated in protracted disputes.

The Sunday after Pentecost is celebrated by Catholics and Protestants as Trinity or Trinitatis Sunday. The day also means trinitatis, Dominica trinitatis, Pentecost, Day of the Saviour, and Trifeldicheit. The Monday after, Trinity was called Good Monday in Westphalia. The reference is not to an event in the life of Jesus but to the doctrine of faith in the way of the one God in three persons.

The Church saw God the Father, the Son of Christ, and the Holy Spirit as different. But equal persons of one God. This is expressed, among other things, in the prayers’ final formula (conclusion), which since the liturgy reform has been: Through Jesus Christ, your Son, our Lord, and God, who lives and reigns with you in unity.

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It is necessary to know as much about the Holy Trinity as is possible for man. But no matter how much we learn, it is not enough because neither angels, cherubim, nor seraphim can dogmatize and theologize about the Most Holy Trinity.

Still, Father Cleopas pointed out that we all owe ourselves to learn as much as possible. The persons of the Holy Trinity are the Father, the Son, and the Holy Spirit. The Father is unborn, has no cause, and is the source of the other two persons. The Son is born of the Father before all eternity, as the Word is born of the mind, and the Holy Spirit proceeds from the Father and sends Himself into the world through the Son.

An image of the Holy Trinity is humans with mind, Word, and Spirit, for we are created in the image and likeness of God. The Christian is and must be permanently a dwelling place of the Blessed Trinity. The Father dwells above all in our will. Jesus Christ, the Word rests in our minds. And the Holy Spirit, whom we receive at baptism, rests in our hearts.

Primary Takeaways

  • According to the Christian view, the Father, Son, and Holy Spirit are inseparably linked. This Trinity is celebrated on Trinity Sunday.
  • God the Father and the Son “let the spirit blow where it will.” Seen in this way, God himself is the one who founded his Church at Pentecost, in which his Spirit – the “Holy” Spirit – let the disciples preach with such enthusiasm that 3000 hearers were baptized.
  • The basic idea of the Christian Church is that the Holy Spirit connects people of the most diverse gifts and backgrounds to the “community of saints” and the “body of Christ.” Trinity Sunday is celebrated on the Sunday after Pentecost.


On the Sunday after Pentecost, Christians celebrate Holy Trinity Day. The Sunday is also called Trinity Sunday. This feast cannot be associated with any particular story in the Bible, and instead, the focus is on a topic of Christian faith. Trinity Sunday marks the beginning of the church year without special celebrations, and this festive period lasts until the end of summer.

It is about the mystery of the faith in the Trinity of God: God the Father, the Son, and God the Holy Spirit. The three divine persons and their worship and adoration are the themes of this feast. Trinity Sunday is mainly unknown.