Genesis 1:15

¹⁵ And let them be for lights in the firmament of the heaven to give light upon the earth: and it was so.

Genesis 9:5

⁵ And surely your blood of your lives will I require; at the hand of every beast will I require it, and at the hand of man; at the hand of every man's brother will I require the life of man.

'A dry place,' as in Luke 11:24, signifies states of evil and falsity which are in the life of someone who does the work of repentance.