Genesis 1:6

Overview - Genesis 1
1	God creates heaven and earth;
3	the light;
6	the firmament;
9	separates the dry land;
14	forms the sun, moon, and stars;
20	fishes and fowls;
24	cattle, wild beasts, and creeping things;
26	creates man in his own image, blesses him;
29	grants the fruits of the earth for food.

Genesis 1:6  (King James Version)
And God said, Let there be a firmament in the midst of the waters, and let it divide the waters from the waters.