The Bible

Genesis 1:2

² And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters.

Commentary

Open

'To open,' as in Revelation 9, signifies communication and conjunction.

(References: Apocalypse Explained 537)

The Bible

Exodus 10:22

²² Moses stretched forth his hand toward the sky, and there was a thick darkness in all the land of Egypt three days.