And when he had said this, he breathed into them and spoke to them: Receive the Holy Spirit!
Is the spirit air?
The Holy Spirit is God. God is the Father, the Son and the Holy Spirit. The Holy Spirit like the Father and the Son is a Divine Person in the Trinity.
The Holy Spirit below does things that only a person can do,
He leads (Matthew 4:1).
He is called God (Acts 5:3-4).
He helps and comforts (John 14:16, 16:7).
He convicts of sin (John 16:17).
He gives testimony of Jesus (John 15:26).
He teaches, guides and brings to remembrance (John 14:26, 16:13).
He speaks and instructs (Acts 8:29; 10:19; John 16:13).
He hears and speaks (John 16:13, Acts 28:25-27).
He can be lied to and tested (Acts 5:3-4,9).
He sends and gives life (Acts 13:4, John 3:6, Gen 1:3).
He is a witness (Acts 5:32)
He restrains (2 Thessalonians 2:7).
He prevents (Acts 16:6-7).
The Spirit "said" to Philip and Peter(Acts 8:29, 10:19).
Peter said he was "told" by the Spirit (Acts 11:12).
The Holy Spirit "solemnly testifies" (Acts 20:23).
He made some of the early Christians overseers to shepherd the Church. (Acts 20:28).
He wills (Acts 13:2).
He interprets our prayers (Romans 8:26).
He knows and communicates (1 Corinthians 2:11; Romans 8:27).
He reveals (Ephesians 3:5).
He has a will-He decides, chooses and distributes the Gifts to the church (1 Corinthians 12:11).
He can be grieved (Ephesians 4:30).
hope this helps !!!