ÒFor the Spirit being one, and
holding the place of light, was between the
water and the heaven, in order that the darkness
might not in any way communicate with the heaven,
which was nearer God, before God said, ÔLet
there be light.Õ The heaven, therefore, being like a dome-shaped covering, comprehended matter, which was like a clod.Ó
Theophilus to Autolycus
2:13