Genesis 1:8
God called the expanse “sky.”
What it says
God names the expanse sky.
What it is doing
This verse completes the second day's work by naming the new realm.
In context
6And God said, “Let there be an expanse between the waters, to separate the waters from the waters.” 7So God made the expanse and separated the waters beneath it from the waters above. And it was so. 8God called the expanse “sky.”