Genesis was compiled and composed by Moses, under the inspiration of the Holy Spirit, probably during the Wilderness Wandering: 1445-1405 BC. Genesis records the very beginning of all things, starting with eternity past. our oldest Old Testament book is Job, written probably about 2,000 BC.
Though Job has only two references concerning the Spirit, the following powerful and awesome statement is given by inspiration through Elihu: “The Spirit of God has made me, and the breath of the Almighty gives me life” (33:14) . With great boldness, Elihu tells us that if it were not for the Lord’s Spirit sustaining life, all that lives would instantly perish! “If [God] should gather to Himself His Spirit and His Breath, all flesh would perish together, and man would return to dust” (33:14-15).
Keil & Delitzsch note:
For the life of the animal is only the individualizing of the breath of the Divine Spirit. The spirit of man on the contrary, is an inspiration directly coming forth from God the personal being, transferred into the bodily frame, and therefore forming a person, (Man thus stands) in the exalted consciousness of having been originated by the Spirit of God, and being endowed with life from the inbreathed breath of the Almighty…
Taken from “The Coming of the Holy Spirit” by Mal Couch