we must confess in all piety that there exists a Spirit of God, for the Word is not more imperfect than our own word… not without subsistence… but as the companion of the Word and the revealer of His energy
John of Damascus establishes the Divine Spirit as a fully subsistential companion to the Logos, categorically distinguished from mere breath or human pneumatic analogy, and grounded in the simplicity of the divine nature.
, Saint John of Damascus Collection, 2016thesis