Holy Spirit is GodActs 5:3-4 But Peter said, "Ananias, why has Satan filled your heart to lie to the Holy Spirit and to keep back part of the proceeds of the land? 4 While it remained unsold, did it not remain your own? And after it was sold, was it not at your disposal? How is it that you have contrived this deed in your heart? You have not lied to men but to God."
Peter asserts that lying to the Holy Spirit is lying to God.
1 Jn 5:6-9 This is he who came by water and blood, Jesus Christ, not with the water only but with the water and the blood. 7 And the Spirit is the witness, because the Spirit is the truth. 8 There are three witnesses, the Spirit, the water, and the blood; and these three agree. 9 If we receive the testimony of men, the testimony of God is greater; for this is the testimony of God that he has borne witness to his Son.
John says the Holy Spirit is God.
1 Cor 3:16-17 Do you not know that you are God's temple and that God's Spirit dwells in you? 17 If any one destroys God's temple, God will destroy him. For God's temple is holy, and that temple you are.
1 Cor 6:19-20 Do you not know that your body is a temple of the Holy Spirit within you, which you have from God? You are not your own; 20 you were bought with a price. So glorify God in your body.
1 Corinthians also says the Holy Spirit is God.
2 Pet 1:21 because no prophecy ever came by the impulse of man, but men moved by the Holy Spirit spoke from God.
Heb 1:1 In many and various ways God spoke of old to our fathers by the prophets...
Acts 20:28 Take heed to yourselves and to all the flock, in which the Holy Spirit has made you overseers, to care for the church of God which he obtained with the blood of his own Son.
The Three Persons of the Godhead are equal.
Jn 7:16 So Jesus answered them, "My teaching is not mine, but his who sent me;
Mt 10:19-20 When they deliver you up, do not be anxious how you are to speak or what you are to say; for what you are to say will be given to you in that hour; 20 for it is not you who speak, but the Spirit of your Father speaking through you.
The Spirit teaches with His own teaching, but it is identical to Christ's.
Rom 8:16 it is the Spirit himself bearing witness with our spirit that we are children of God...
1 Cor 12:4-6 Now there are varieties of gifts, but the same Spirit; 5 and there are varieties of service, but the same Lord; 6 and there are varieties of working, but it is the same God who inspires them all in every one.
Ezek 11:19-20 And I will give them one heart, and put a new spirit within them; I will take the stony heart out of their flesh and give them a heart of flesh, 20 that they may walk in my statutes and keep my ordinances and obey them; and they shall be my people, and I will be their God.