When one wants to ask a question about the Holy Spirit, the right word to use is not “What” but “Who” since the Holy Spirit is a person—and also God himself. So, who is the Holy Spirit? One of the common misconceptions about the Holy Spirit is that it is something like a “force,” like in Star Wars, or some kind of energy or power. The Holy Spirit is indeed energy, but much more than that. The very reason why the Holy Spirit is so full of energy that gives life and empowers people is that the Holy Spirit is God’s presence; in other words, the Holy Spirit is God. The Holy Spirit is a person, and just like any person, the Holy Spirit is someone to whom you can talk, just as you might talk to God the Father or His Son Jesus.
When you read (In the beginning God created the heaven and the earth. And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters. Genesis 1:1-2), you will see that the Holy Spirit was present during the moment of creation; in fact, it was the Holy Spirit who was hovering over the face of the waters. The Holy Spirit is not just a person but God himself; the Holy Spirit is part of the Godhead, what we call the Holy Trinity, one God in three divine persons. God the Father, God the Son who is Jesus, and God the Holy Spirit.
Throughout the Bible, you will see the Holy Spirit working and empowering people as God commissions them to do certain things. One good example is Bezalel, found in Exodus 31. God empowered Bezalel to be excellent in his craftsmanship as he did the work for God’s tabernacle. It is because the Spirit of God filled him that he was empowered to do that work. This is the same Holy Spirit that empowered the prophets in the Old Testament. They were able to get revelations from God, like visions and dreams, these divine revelations all came because of the empowerment of the Holy Spirit. Even Jesus was empowered by the Holy Spirit (And John bare record, saying, I saw the Spirit descending from heaven like a dove, and it abode upon him. John 1:32). John saw that the Spirit of God descended upon Jesus like a dove, and with God’s Spirit, Jesus redeemed the world, which is why He was able to heal the sick, cast out demons, and perform signs and wonders, all to restore the things here on Earth.
The Holy Spirit does not just empower us to do signs and wonders or things out of the ordinary, but it also empowers us to live a life that is pleasing to God. The Holy Spirit works within us, which is why one gets born again in the Spirit (see the article here). The Holy Spirit transforms our hardened hearts and makes them tender before God, transforming us radically (John 3:6-8). The Holy Spirit is so powerful that He gives life to everything. It is the Holy Spirit who worked when Jesus was resurrected from the dead. The Holy Spirit is someone that Jesus left for us in order to help us in our ministry of making disciples, He is the gift that Jesus promised. As you are already in Christ, you don’t need to look for the Holy Spirit; the Holy Spirit is within you and will always help you in everything. Because Jesus tore the veil in the Holy Temple, you are now the temple, and the Holy Spirit resides within you.