What the Bible says about Air as Metaphor of Spirit
(From Forerunner Commentary)
When "spirit" is used in this sense, "air" is the closest physical thing Jesus could use to illustrate His instruction. Air is material, but it is invisible to our eyes, and its invisibility is what He wants us to focus on. Spirit is invisible—but immaterial—and in this specific sense, it has no form or substance. It is non-physical, but it can affect the around and the about, the environment, including a person begotten by means of it.
John W. Ritenbaugh
The Holy Spirit and the Trinity (Part One)Related Topics: Begettal of Holy Spirit | Begettal of the Holy Spirit | Holy Spirit | Holy Spirit, Begettal of | Invisibility of Spirit | Spirit | Spirit, Invisibility of