The Holy Spirit

The Holy Spirit - in the Third Iconium of the Holy Trinity.  It is the Spirit of God, as is shown in the first chapter of the book of Genesis:  "In the beginning God created the heavens and the earth. The earth was without form, and void; and darkness was on the face of the deep. And the Spirit of God was hovering over the face of the waters.  Then God said, “Let there be light”; and there was light." (Genesis 1:1-3)