The Holy Spirit is one in being with the Father and the Son as the third person of the Trinity and is it is equal to God in all ways therefore the Holy Spirit is God. The Holy Spirit was present and active from the beginning of time in Old Testament empowering the prophets in proclaiming their prophecies. The Holy Spirit is not to be found in everyone in the Old Testament, but now dwells within each believer in the New Testament and in use who are baptise with the Holy Spirit.
The One whom the Father has sent into our hearts, the Spirit of his Son, is truly God. Consubstantial with the Father and the Son, the Spirit is inseparable from them, in both the inner life of the Trinity and his gift of love for the world. In adoring the Holy Trinity, life-giving, consubstantial, and indivisible, the Church's faith also professes the distinction of persons. When the Father sends his Word, he always sends his Breath. In their joint mission, the Son and the Holy Spirit are distinct but inseparable. To be sure, it is Christ who is seen, the visible image of the invisible God, but it is the Spirit who reveals him. ~ ccc 689
Isaiah 61:1-2
The Spirit of the Lord God is upon me,
because the Lord has anointed me
to bring good tidings to the afflicted;
he has sent me to bind up the brokenhearted,
to proclaim liberty to the captives,
and the opening of the prison to those who are bound;
2 to proclaim the year of the Lord’s favor,
and the day of vengeance of our God;
to comfort all who mourn;
Exodus 31:1-3
The Lord said to Moses, “See, I have called by name Bez′alel the son of Uri, son of Hur, of the tribe of Judah: and I have filled him with the Spirit of God, with ability and intelligence, with knowledge and all craftsmanship,
Numbers 27:18
And the Lord said to Moses, “Take Joshua the son of Nun, a man in whom is the spirit, and lay your hand upon him;
Judges 3:10
The Spirit of the Lord came upon him, and he judged Israel;
1 Samuel 10:10
When they came to Gib′e-ah, behold, a band of prophets met him; and the spirit of God came mightily upon him, and he prophesied among them.
1 Samuel 16:14
Now the Spirit of the Lord departed from Saul, and an evil spirit from the Lord tormented him.
Jesus spoke of the coming of the Holy Spirit on several occasions,
Luke 11:13
If you then, who are evil, know how to give good gifts to your children, how much more will the heavenly Father give the Holy Spirit to those who ask him!”
Luke 12:12
for the Holy Spirit will teach you in that very hour what you ought to say.
John 7:37-39
On the last day of the feast, the great day, Jesus stood up and proclaimed, “If any one thirst, let him come to me and drink. He who believes in me, as the scripture has said, ‘Out of his heart shall flow rivers of living water.’” Now this he said about the Spirit, which those who believed in him were to receive; for as yet the Spirit had not been given, because Jesus was not yet glorified.
John 14:15-17
“If you love me, you will keep my commandments. And I will pray the Father, and he will give you another Counselor, to be with you for ever, even the Spirit of truth, whom the world cannot receive, because it neither sees him nor knows him; you know him, for he dwells with you, and will be in you.
John 15:26
But when the Counselor comes, whom I shall send to you from the Father, even the Spirit of truth, who proceeds from the Father, he will bear witness to me;
The Coming of the Holy Spirit
Act 2:1-13
When the day of Pentecost had come, they were all together in one place. And suddenly a sound came from heaven like the rush of a mighty wind, and it filled all the house where they were sitting. And there appeared to them tongues as of fire, distributed and resting on each one of them. And they were all filled with the Holy Spirit and began to speak in other tongues, as the Spirit gave them utterance.
Now there were dwelling in Jerusalem Jews, devout men from every nation under heaven. And at this sound the multitude came together, and they were bewildered, because each one heard them speaking in his own language. And they were amazed and wondered, saying, “Are not all these who are speaking Galileans? And how is it that we hear, each of us in his own native language? Par′thians and Medes and E′lamites and residents of Mesopota′mia, Judea and Cappado′cia, Pontus and Asia, Phryg′ia and Pamphyl′ia, Egypt and the parts of Libya belonging to Cyre′ne, and visitors from Rome, both Jews and proselytes, Cretans and Arabians, we hear them telling in our own tongues the mighty works of God.” And all were amazed and perplexed, saying to one another, “What does this mean?” But others mocking said, “They are filled with new wine.”
THE PROPHECY OF JOEL
Joel 2:28-32
God’s Spirit Poured Out
“And it shall come to pass afterward, that I will pour out my spirit on all flesh;
your sons and your daughters shall prophesy,
your old men shall dream dreams,
and your young men shall see visions.
Even upon the menservants and maidservants
in those days, I will pour out my spirit.
“And I will give portents in the heavens and on the earth, blood and fire and columns of smoke. The sun shall be turned to darkness, and the moon to blood, before the great and terrible day of the Lord comes. And it shall come to pass that all who call upon the name of the Lord shall be delivered; for in Mount Zion and in Jerusalem there shall be those who escape, as the Lord has said, and among the survivors shall be those whom the Lord calls.
Joel's prophecy began to be fulfilled on the Day of Pentecost
after the Ascension of Christ. (Acts 2)
THE PROPHECIES OF ISAIAH
Isaiah 44:3-5
For I will pour water on the thirsty land,
and streams on the dry ground;
I will pour my Spirit upon your descendants,
and my blessing on your offspring.
They shall spring up like grass amid waters,
like willows by flowing streams.
This one will say, ‘I am the Lord’s,’
another will call himself by the name of Jacob,
and another will write on his hand, ‘The Lord’s,’
and surname himself by the name of Israel.”
Isaiah's prophecy connects to promise of living water, "If any one thirst, let him come to me and drink...
John 7:37-39
Rivers of Living Water
On the last day of the feast, the great day, Jesus stood up and proclaimed, “If any one thirst, let him come to me and drink. He who believes in me, as the scripture has said, ‘Out of his heart shall flow rivers of living water.’” Now this he said about the Spirit, which those who believed in him were to receive; for as yet the Spirit had not been given, because Jesus was not yet glorified.
THE PROPHECIES OF EZEKIEL
Ezekiel 36:26-27
A new heart I will give you, and a new spirit I will put within you; and I will take out of your flesh the heart of stone and give you a heart of flesh. And I will put my spirit within you, and cause you to walk in my statutes and be careful to observe my ordinances.
The Prophecy of Ezekiel is related to Romans 8:11-13
If the Spirit of him who raised Jesus from the dead dwells in you, he who raised Christ Jesus from the dead will give life to your mortal bodies also through his Spirit who dwells in you.
So then, brethren, we are debtors, not to the flesh, to live according to the flesh for if you live according to the flesh you will die, but if by the Spirit you put to death the deeds of the body you will live.
THE PROPHECY OF ZECHARIAH
Zechariah 12:10
Mourning for the Pierced One
And I will pour out on the house of David and the inhabitants of Jerusalem a spirit of compassion and supplication, so that, when they look on him whom they have pierced, they shall mourn for him, as one mourns for an only child, and weep bitterly over him, as one weeps over a first-born.
The Prophecy of Zechariah is seen in Act 2:32-37,telling people to look upon Jesus.
Acts 2:32-37
This Jesus God raised up, and of that we all are witnesses. Being therefore exalted at the right hand of God, and having received from the Father the promise of the Holy Spirit, he has poured out this which you see and hear. For David did not ascend into the heavens; but he himself says,
‘The Lord said to my Lord, Sit at my right hand, till I make thy enemies a stool for thy feet.’
Let all the house of Israel therefore know assuredly that God has made him both Lord and Christ, this Jesus whom you crucified.”
Now when they heard this they were cut to the heart, and said to Peter and the rest of the apostles, “Brethren, what shall we do?”
