The Father is God. Jesus is God. The Holy Spirit is God also. In Acts 5:3-4, Peter confronted Ananias and said he lied to the Holy Spirit, which meant he lied not to men, but God.
The Bible ascribes to him the attributes of God. He is eternal according to Hebrews 9:14. He is able to create life. Matthew 1:18 says that Mary’s child was conceived by the Holy Spirit. He is omni-present according to Psalm 139:7. He was sent by God, as was Jesus, according to 1 Corinthians 2:12. He knows the thoughts of God according to 1 Corinthians 2:11.
The Holy Spirit is a distinct person with a distinct ministry. Jesus said he would ask the Father and he would send another Counselor to be with us forever, the Spirit of Truth (John 14:16). He picks up where Jesus left off in his support of and ministry to us. He knows all Jesus knows, for Jesus promised the Holy Spirit would teach us all things (John 14:26).