The Holy Spirit is the power of God—not a personage, entity, consciousness, or part of the Godhead or a trinity. The Bible speaks of the Spirit as the power or mind of God, the power of love and of a sound mind. It emanates from Him and thus can be said to be "poured out" (Titus 3:5-6), "breathed" (John 20:22), and used to "fill" (Acts 2:4) and "anoint" (Acts 10:38).
Martin G. Collins
The Holy Spirit
One sentence in the Moffatt translation, from verse 15, catches the thought clearly: "And yet one day from the heights of heaven a spirit shall breathe unto us [or, into us]." Then follows the effects of that Spirit. In this context, just as in Psalm 104:30, things begin in a state of destruction and remain that way until God sends forth His Spirit. Then, regeneration of both the people and the land takes place, and the transformation of both occurs.
John W. Ritenbaugh
Pentecost and the Holy Spirit
Other Forerunner Commentary entries containing Isaiah 32:15: