Job 37:18
Hast thou with him spread out the sky, which is strong, and as a molten looking glass?
Let’s not get carried away though, trust Job to bring us back to reality. This gets us back to the very meaning of the Hebrew word translated firmament – raqia. Something which has been spread out into a thin sheet. This time the concept is connected with something strong, which twelve layers of different crystalline compounds would be. It looks like molten glass. This once again connects our firmament with the sea of glass as we saw in Revelation 4, 15 and 21.
Matty's Paradigm 