The Holy Spirit is the third Person of the Holy Trinity. He is not an impersonal force, a cosmic energy, or a spiritual entity as misinterpreted by the New Age. On the contrary, He is God. Consubstantial with the Father and the Son, equal to them in dignity and worship, distinct from them as a Person.
Saint Thomas Aquinas offers the most precise and beautiful definition: just as the Word of God is the Son (His eternal knowledge) the Love of God is the Holy Spirit. This love is so intense that it manifests itself in a divine Person, real, who dwells in us and acts in us.
However, as Fr. Antonio Royo Marín pointed out in his work The Great Unknown, if Saint Paul were to ask today what he asked in Ephesus: “Did you receive the Holy Spirit when you believed?” (Acts 19:2), he would receive from many Christians a disconcertingly similar answer to that of those first disciples: “We have not even heard that there is a Holy Spirit.”
To combat the ignorance that exists regarding who the Holy Spirit is, we will publish a series of articles about Him. So that He may be better known, more loved, and listened to. A soul docile and obedient to His inspirations can attain holiness with greater ease and speed.
Do you want to find Pentecost celebrations at a Catholic church? The Mass Times app shows you updated schedules for more than 110,000 churches in 200 countries. Download it now.
Who Is the Holy Spirit According to the Catechism and the Bible?
Who Is the Holy Spirit According to the Catholic Church?
The Catechism of the Catholic Church teaches that the Holy Spirit is the third Person of the Holy Trinity, consubstantial with the Father and the Son, that is, of the same divine nature; and inseparable from them both in the inner life of God and in His action in the world (CCC 689).
The Holy Spirit proceeds from the Father and the Son. He is not a creature or a minister of God: He is God Himself. That is why the Nicene-Constantinopolitan Creed calls Him “Lord and giver of life” and affirms that “with the Father and the Son He is worshiped and glorified” (CCC 685).
Fr. Royo Marín points out that the Councils have defined that the Father is wholly in the Son and in the Holy Spirit; the Son is wholly in the Father and in the Holy Spirit; the Holy Spirit is wholly in the Father and in the Son. None precedes the other in eternity, nor exceeds Him in greatness or power. This is what theology calls circumincession: the mutual and inseparable indwelling of the three divine Persons.
Who Is the Holy Spirit According to the Bible?
The Bible reveals Him progressively, not all at once. The Spirit of God appears in the very first verse of Genesis, hovering over the waters of creation (Gen 1:2). He speaks through the prophets, prepares the coming of the Messiah, descends upon Jesus at His baptism, and is poured out upon the Church at Pentecost.
Jesus is the one who reveals Him fully. He calls Him the “Paraclete”—literally “the one called alongside”, the Comforter, the Advocate (Jn 14:16). He calls Him the “Spirit of Truth” who will guide His disciples to the complete truth (Jn 16:13). And He promises Him as His greatest gift before His Passion.
Saint Paul adds the appellations that tradition has preserved: Spirit of promise (Gal 3:14), Spirit of adoption (Rom 8:15), Spirit of Christ (Rom 8:11), Spirit of glory (1 Pet 4:14). All point to the same reality: a divine Person who acts in history to unite men with God (CCC 693).
Why Is the Holy Spirit the “Great Unknown”?
Fr. Royo Marín identifies three reasons that explain this lack of knowledge. The first is the discretion of His manifestations: the Father manifests Himself in visible creation, the Son became incarnate and lived among us, but the Holy Spirit has manifested Himself in a sensible form only three times. The first, in the form of a dove over Jesus at the Jordan, as a bright cloud at Tabor, and as tongues of fire in the Upper Room.
The second reason is the lack of doctrine: teaching about the Holy Spirit has historically been the scarcest and least developed of all Christian catechesis.
The third is the lack of devotions: while the feasts of Christmas and Easter are celebrated with great solemnity, Pentecost, which in the liturgical rite has equal rank with both, frequently goes unnoticed by most of the faithful.
The Catechism adds a deeper theological reason: the Holy Spirit “does not speak of Himself” (Jn 16:13). His proper mission is to reveal the Son, not to reveal Himself. This discretion is the proper form of love: one who truly loves does not seek his own prominence, but the good of the beloved (CCC 687).
What Are the Names and Symbols of the Holy Spirit?
What Do the Names of the Holy Spirit Mean?
The proper name “Holy Spirit” translates the Hebrew Ruah—breath, air, wind. Jesus uses precisely the image of the wind to reveal to Nicodemus the transcendent newness of the one who is personally the Breath of God (Jn 3:5-8). “Spirit” and “Holy” are divine attributes common to the three Persons, but by uniting them, Scripture designates without ambiguity the ineffable Person of the Holy Spirit (CCC 691).
Jesus also calls Him the “Paraclete”—Comforter, Advocate, Defender. Saint Thomas points out that all the names of the Holy Spirit point to His nature as Love: He is the love with which the Father loves the Son and the Son loves the Father—and that personal, eternal love is the one who dwells in us when we are in grace.
What Are the Symbols of the Holy Spirit?
Water
Water symbolizes the action of the Holy Spirit in Baptism. Just as the first birth occurs in water, baptismal water signifies the new birth in the Holy Spirit: “No one can enter the kingdom of God without being born of water and Spirit” (Jn 3:5).
But the Spirit is not only the water of Baptism; He is personally the living Water that flows from the side of the crucified Christ (Jn 19:34) and that in us springs up to eternal life (Jn 4:14). The water that quenches thirst without it returning, that is the Holy Spirit (CCC 694).
Fire
Fire symbolizes the transforming energy of the Holy Spirit. Unlike water, which evokes birth and fruitfulness, fire leaves nothing the same: it purifies, illuminates, consumes what should not remain, and transforms what it touches.
John the Baptist announced that the Messiah “will baptize you with the Holy Spirit and fire” (Lk 3:16). And Jesus confirmed: “I came to bring fire to the earth, and how I wish it were already kindled!” (Lk 12:49). On the day of Pentecost, the Spirit manifested Himself precisely in the form of “tongues as of fire” that rested on each of the disciples (Acts 2:3-4). Saint John of the Cross called the Holy Spirit “living flame of love.” This is perhaps the most exact image of His action in the soul that Christian mysticism has produced (CCC 696).
Dove
The dove is the most universally recognized symbol of the Holy Spirit. Its origin lies in two biblical texts that the liturgy relates: the dove of Noah that returns with an olive branch to the ark and is a sign that the waters of the flood have ceased and the earth is habitable. And, secondly, the baptism of Jesus, where “the Holy Spirit descended upon him in bodily form like a dove” (Lk 3:22). The dove signifies the gentleness, purity, and peace of the Spirit, and His descent upon Jesus reveals that in Him rests the fullness of the Spirit of God (CCC 701).
Cloud and Light
Cloud and light are inseparable in the manifestations of the Holy Spirit. The cloud that guided Israel through the desert, that covered Mount Sinai, that filled Solomon’s Temple, is the sign of the glorious presence of God, the Shekinah. In the New Testament, the Holy Spirit covers Mary at the Annunciation “with His shadow” (Lk 1:35), envelops Jesus at the Transfiguration (Lk 9:34), and hides Him from the eyes of the disciples at the Ascension (Acts 1:9). The cloud does not hide, but reveals the divine presence precisely by veiling it, because the glory of God exceeds the capacity of the human eye (CCC 697).
How Does the Holy Spirit Act in the Life of the Christian?
The Holy Spirit does not dwell in the soul passively. As Fr. Royo Marín teaches, He dwells in us to unfold a most lively activity oriented to perfecting us degree by degree and leading us (if we do not place obstacles) to the highest peaks of union with God.
Saint Thomas Aquinas enumerates five concrete fruits that the Holy Spirit produces in those who receive Him:
1. He Cleanses Us from Sins
The same one who creates, repairs. The Holy Spirit who created the human soul is the one who restores it when sin has damaged it. The theological reason is precise: all sins are forgiven by love, and the Holy Spirit is the Love of God poured into our hearts (Rom 5:5). “Send forth your Spirit and they shall be created, and you shall renew the face of the earth” (Ps 104:30). CCC 734 confirms it: “The first effect of the gift of Love is the remission of our sins.”
2. He Illuminates the Understanding
All true knowledge about God comes from the Holy Spirit. Jesus promised it: “The Paraclete, the Holy Spirit, whom the Father will send in my name, will teach you everything and remind you of all that I have said to you” (Jn 14:26). The Spirit does not add a new revelation, but makes us understand in depth the revelation of Christ and guides the discernment of God’s will in the concrete situations of life.
3. He Helps Us Keep the Commandments
No one can keep God’s commandments without loving Him. And no one can love God without the Holy Spirit. The Spirit makes us love God, and that love moves us to keep His commandments. Ezekiel’s promise expresses it definitively: “I will give you a new heart and put a new spirit in you; I will remove from you your heart of stone and give you a heart of flesh” (Ezek 36:26). The Holy Spirit is the source of the love that makes it possible to live them.
4. He Strengthens Hope in Eternal Life
The Holy Spirit is the pledge of the eternal inheritance, the guarantee that ensures the fulfillment of the promise: “You were marked with the seal of the promised Holy Spirit, who is the pledge of our inheritance” (Eph 1:13-14). Eternal life belongs to man as a son of God, and that filiation occurs to the extent that the Spirit of Christ dwells in us: “The Spirit himself testifies with our spirit that we are God’s children” (Rom 8:16).
5. He Acts in Prayer
The Holy Spirit is the Master of prayer. Saint Paul says it with disconcerting honesty: “We do not know what we ought to pray for, but the Spirit himself intercedes for us through wordless groans” (Rom 8:26). The deepest sign of His presence in prayer is a single word: Abba, Father. “God sent the Spirit of his Son into our hearts, the Spirit who calls out, ‘Abba, Father'” (Gal 4:6). Whoever can call God Father in truth does so in the Holy Spirit.
How Does the Holy Spirit Act in the Sacraments?
Fr. Royo Marín teaches that the Holy Spirit works in the soul together with sanctifying grace and the infused virtues, which are the supernatural habits that the Spirit infuses to enable us to act as children of God. But His most visible action unfolds in the sacraments.
Baptism
Baptism is the sacrament of new birth in the Holy Spirit. Baptismal water acts because the Holy Spirit has sanctified it through the epiclesis. By being immersed in it, the baptized person dies to sin and rises in Christ by the power of the Spirit. The seal that Baptism imprints is that of the Holy Spirit, which is indelible, permanent, marking the baptized as a child of God forever (CCC 698).
Confirmation
The sacrament of Confirmation is equivalent to a true Pentecost for each baptized person. As Fr. Royo Marín points out: just as the apostles went from the cowardice of the Passion to the superhuman fortitude of Pentecost, the confirmed Christian receives the fullness of the Holy Spirit to confess and defend the faith with courage. Confirmation imprints an indelible character that makes the Christian a soldier of Christ with the right to the actual graces necessary for that mission throughout life.
Eucharist
In each Eucharistic celebration, the priest invokes the Holy Spirit in the epiclesis to transform the bread and wine into the Body and Blood of Christ. But the action of the Spirit does not end in the Eucharistic species. CCC 737 points out that the Spirit “makes present the mystery of Christ, especially in the Eucharist, to reconcile them and lead them to communion with God.” Furthermore, as Fr. Royo Marín teaches, in each well-received Communion a more penetrating indwelling of the three divine Persons is verified in the soul because where the Son is, the Father and the Holy Spirit are also by virtue of the Trinitarian circumincession.
Do You Want to Live Pentecost with Fervor? Here are some articles that may help you do so:
- What Is the Easter Season and How Long Does It Last?: Complete guide to the Easter Season: meaning, Sundays, liturgical signs, Via Lucis, Regina Coeli, and the 2026 celebrations calendar.
Who Is the Holy Spirit?
The Holy Spirit is the third Person of the Holy Trinity—God, consubstantial with the Father and the Son, equal to them in dignity and worship. Saint Thomas Aquinas defines Him thus: just as the Son is the Word of God—His eternal knowledge—the Holy Spirit is the Love of God, who proceeds from the Father and the Son. The Catechism teaches that this love has been “poured into our hearts through the Holy Spirit who has been given to us” (CCC 733, cf. Rom 5:5).
Why Is the Holy Spirit Called "the Great Unknown"?
Because, unlike the Father—whose greatness is manifested in visible creation—and the Son—who became incarnate and lived among us—the Holy Spirit acts in an interior and discreet manner. He has manifested Himself in a sensible form only three times in the Gospel, and His sanctifying action escapes the perception of the senses. Fr. Royo Marín points out that this discretion is proper to His nature as Love: one who truly loves does not seek prominence, but the good of the beloved.
What Are the Symbols of the Holy Spirit?
The Catechism enumerates: water (new birth in Baptism), fire (transforming energy), the dove (gentleness and peace), cloud and light (glorious presence of God), anointing (consecration), the seal (indelible character of the sacraments), the hand (imposition in the sacraments), and the finger (the Law written on the heart).
Who Is the Holy Spirit and What Does He Do in Us?
According to Saint Thomas Aquinas, the Holy Spirit produces five fruits in those who receive Him: He cleanses from sins, illuminates the understanding, helps to keep the commandments, strengthens hope in eternal life, and counsels in doubts by making known the will of God.
When Did the Holy Spirit Come?
The Holy Spirit has been present since creation and has acted in the prophets and in the Incarnation. But He was poured out fully and definitively upon the Church on the day of Pentecost, fifty days after the Resurrection, when the glorified Christ sent Him upon the apostles gathered with Mary in the Upper Room (Acts 2:1-4).
Who Is the Catholic Holy Spirit and What Relationship Does He Have with the Church?
The Holy Spirit is the soul of the Church. CCC 747 teaches that He is the one who “builds, animates, and sanctifies” the Body of Christ. Through the sacraments He communicates the life of Christ to the members of His Body and unites them in a communion that reflects the Holy Trinity. As Fr. Royo Marín teaches, the Church is the privileged place of His knowledge and action: in the Scriptures that He has inspired, in Tradition, in the Magisterium, in sacramental liturgy, and in the witness of the saints.
How Do I Find Mass Times for Pentecost at Nearby Churches?
The fastest way is to download the Mass Times app, available on iOS and Android. It allows you to search by current location, parish name, or city, with schedules updated in real time in more than 110,000 churches in 200 countries. You can also check the website or social media of your local parish.
Who Is the Holy Spirit of God?
The Holy Spirit, according to the Christian faith, is the third person of the Holy Trinity, together with God the Father and God the Son (Jesus Christ). He is not an impersonal force, but a Divine Person who acts in the world and in the lives of believers.
