When Jesus appeared to his Apostles after he rose from the dead, he promised, that after his Ascension into heaven, he would send the Holy Spirit upon them to teach and strengthen them for their ministry.
St. Luke tells what happened on Pentecost Day:
“When the time for Pentecost was fulfilled, they were all in one place together. And suddenly there came from the sky a noise like a strong driving wind, and it filled the entire house in which they were.
Then there appeared to them tongues as of fire, which parted and came to rest on each one of them. And they were all filled with the Holy Spirit
and began to speak in different tongues, as the Spirit enabled them to proclaim.
Now there were devout Jews from every nation under heaven staying in Jerusalem. At this sound, they gathered in a large crowd, but they were confused because each one heard them speaking in his own language.
They were astounded, and in amazement they asked, “Are not all these people who are speaking Galileans? Then how does each of us hear them in his native language? We are Parthians, Medes, and Elamites, inhabitants of Mesopotamia, Judea and Cappadocia, Pontus and Asia, Phrygia and Pamphylia, Egypt and the districts of Libya near Cyrene, as well as travelers from Rome, both Jews and converts to Judaism, Cretans and Arabs, yet we hear them speaking in our own tongues of the mighty acts of God.” Acts 2:1-11
Jesus Talks to his disciples about the Coming of the Holy Spirit:
“When the Advocate comes whom I will send you from the Father,
the Spirit of truth that proceeds from the Father, he will testify to me.
And you also testify, because you have been with me from the beginning.
“I have much more to tell you, but you cannot bear it now.
But when he comes, the Spirit of truth, he will guide you to all truth.
He will not speak on his own, but he will speak what he hears, and will declare to you the things that are coming.
He will glorify me, because he will take from what is mine and declare it to you.
Everything that the Father has is mine; for this reason I told you that he will take from what is mine and declare it to you.” (Jn 15:26-27; 16:12-15)
After his Resurrection, Jesus Visits his Disciples:
On the evening of that first day of the week, when the doors were locked, where the disciples were, for fear of the Jews, Jesus came and stood in their midst and said to them, “Peace be with you.”
When he had said this, he showed them his hands and his side.
The disciples rejoiced when they saw the Lord. Jesus said to them again, “Peace be with you.
As the Father has sent me, so I send you.”
And when he had said this, he breathed on them and said to them,
“Receive the Holy Spirit. Whose sins you forgive are forgiven them, and whose sins you retain are retained.” (JN 15:26-27; 16:12-15)
St. Paul, tells the People of Corinth about the Holy Spirit:
No one can say, “Jesus is Lord,” except by the Holy Spirit.
There are different kinds of spiritual gifts but the same Spirit; there are different forms of service but the same Lord; there are different workings but the same God who produces all of them in everyone.
To each individual the manifestation of the Spirit is given for some benefit.
As a body is one though it has many parts, and all the parts of the body, though many, are one body, so also Christ.
For in one Spirit we were all baptized into one body, whether Jews or Greeks, slaves or free persons, and we were all given to drink of one Spirit. (1 COR 12:3B-7, 12-13)
PRAYER TO THE HOLY SPIRIT (Sequence)
Come, Holy Spirit, come! And from your celestial home
Shed a ray of light divine! Come, Father of the poor!
Come, source of all our store! Come, within our bosoms shine.
You, of comforters the best; You, the soul’s most welcome guest;
Sweet refreshment here below; In our labor, rest most sweet;
Grateful coolness in the heat; Solace in the midst of woe.
O most blessed Light divine, Shine within these hearts of yours,
And our inmost being fill! Where you are not, we have naught,
Nothing good in deed or thought, Nothing free from taint of ill.
Heal our wounds, our strength renew; On our dryness pour your dew;
Wash the stains of guilt away: Bend the stubborn heart and will;
Melt the frozen, warm the chill; Guide the steps that go astray.
On the faithful, who adore And confess you, evermore
In your sevenfold gift descend; Give them virtue’s sure reward;
Give them your salvation, Lord; Give them joys that never end. Amen.
Come, Holy Spirit, fill the hearts of your faithful and kindle in them the fire of your love. Alleluia!
Source: Liturgy of Pentecost