In the Old Testament, the word for “spirit” is “ruach”. The Hebrew word “ruach” can mean “spirit,” “wind,” or even “breath.” In the New Testament, the word for “spirit” is “pneuma”, which can also mean “wind” or “breath.” Of course, as far as the words and languages, there is much more to it than that, but for the sake of simplicity, just note that “ruach” and “pneuma” can mean “spirit,” “wind,” or “breath.”
Wind is a Biblical symbol of the Holy Spirit.
On the day of Pentecost, all the believers were meeting together in one place. Suddenly, there was a sound from heaven like the roaring of a mighty windstorm, and it filled the house where they were sitting. - Acts 2:1–2
Like the wind, the Holy Spirit comes in suddenly and from seemingly nowhere - He whirls about the atmosphere and changes everything.
The Spirit, like the wind, moves wherever He wants and is, at times, unpredictable.
Just as you can hear the wind but can’t tell where it comes from or where it is going, so you can’t explain how people are born of the Spirit. - John 3:8
Breath is also a Biblical symbol of the Holy Spirit.
The Holy Spirit is the breath of God; He is the breath of life that sustains all living beings.
And the Lord God formed man of the dust of the ground, and breathed into his nostrils the breath of life; and man became a living soul. - Genesis 2:7, KJV
The spirit of God hath made me, and the breath of the Almighty hath given me life. - Job 33:4, KJV
The Holy Spirit proceeds from the depths of God. This is why, when imparting the Holy Spirit to His followers, Jesus breathed upon them.
Then He breathed on them and said, “Receive the Holy Spirit.” - John 20:22
The Holy Spirit is unpredictable, invisible but powerful. He brings refreshing. He stirs the atmosphere, and He brings life. He is the Wind of Heaven, the Breath of God.