1. Being a person, the Holy Spirit has feelings. He can become sad or angry, and others can insult Him and blaspheme against Him (Is 63:10; Mt 12:31; Ac 7:51; Eph 4:30; Heb 10:29).

Yet they rebelled and grieved his Holy Spirit. So he turned and became their enemy and he himself fought against them. – Isaiah 63:10

And so I tell you, every kind of sin and slander can be forgiven, but blasphemy against the Spirit will not be forgiven. – Matthew 12:31

“You stiff-necked people! Your hearts and ears are still uncircumcised. You are just like your ancestors: You always resist the Holy Spirit! – Acts 7:51

And do not grieve the Holy Spirit of God, with whom you were sealed for the day of redemption. – Ephesians 4:30

How much more severely do you think someone deserves to be punished who has trampled the Son of God underfoot, who has treated as an unholy thing the blood of the covenant that sanctified them, and who has insulted the Spirit of grace? – Hebrews 10:29

2. He has intentions, shows willfulness and discretion, loves, communicates, testifies, teaches, and prays (Neh 9:20; Jn 15:26; Ac 13:2; Rm 8:26,27; 15:30; 1Co 12:11). These are qualities that distinguish Him as a person. 

You gave your good Spirit to instruct them. You did not withhold your manna from their mouths, and you gave them water for their thirst. – Nehemiah 9:20

When the Advocate comes, whom I will send to you from the Father—the Spirit of truth who goes out from the Father—he will testify about me. – John 15:26

While they were worshiping the Lord and fasting, the Holy Spirit said, “Set apart for me Barnabas and Saul for the work to which I have called them.” – Acts 13:2

In the same way, the Spirit helps us in our weakness. We do not know what we ought to pray for, but the Spirit himself intercedes for us through wordless groans. And he who searches our hearts knows the mind of the Spirit, because the Spirit intercedes for God’s people in accordance with the will of God. – Romans 8:26-27

I urge you, brothers and sisters, by our Lord Jesus Christ and by the love of the Spirit, to join me in my struggle by praying to God for me. – Romans 15:30

All these are the work of one and the same Spirit, and he distributes them to each one, just as he determines. – 1 Corinthians 12:11