Genesis 1:2 But the earth became waste and emptiness, and darkness was on the surface of the deep, and the Spirit of God was brooding upon the surface of the waters.
Deuteronomy 32:11 As the eagle rouses his nest, Hovers over his young, Spreads his wings, takes them, And bears them up upon his pinions;
"Brooding" is the same word as Deuteronomy 32:11 "spread his wings", in that verse, God is like the eagle rouses his nest, Hovers over his young, . Spirit of God brooding, spread his wings on the situation of death, its purpose is to produce Life. Hen hatched on eggs, is to produce the living things. Bible first time mentioned Spirit of God, is the brooding Spirit. (Its means Genesis chap 1 is not mainly on creation but is the records of Life)