Let's look again at some verses on the firmament.
And God said, “Let there be a
vaulted dome in the midst of the waters, and let it
cause a separation between the waters.”
Genesis 1:6 LEB
A physical barrier holding back waters above.
So God made the vaulted dome, and he caused a separation between the waters which were under the vaulted dome and between
the waters which were over the vaulted dome. And it was so.
Genesis 1:7 LEB
(Waters held above the dome, restrained by windows suggesting a solid nature to this dome).
And God called the
vaulted dome “heaven.” And there was evening, and there was morning, a second day.
Genesis 1:8 LEB
And God said, “Let there be
lights in the vaulted dome of heaven to separate day from night, and let them be as signs and for appointed times, and for days and years,
Genesis 1:14 LEB
(The stars are placed in the dome, equidistantly just as ANE suggests in a snow-globe cosmology.)
In the six hundredth year of the life of Noah, in the second month, on the seventeenth day of the month—on that day all the springs of the great deep were split open, and the
windows of heaven were opened.
Genesis 7:11 LEB
In the six hundredth year of the life of Noah, in the second month, on the seventeenth day of the month—on that day
all the springs of the great deep were split open,
and the windows of heaven were opened. And the waters prevailed overwhelmingly upon the earth, and they covered all the high mountains which were under the entire heaven.
Genesis 7:11, 19 LEB
(Again, the physical solid windows opened to release the restrained water, again suggesting a physical nature to this dome).
And the fountains of the deep and the
windows of the heavens were closed, and the rain from the heavens was restrained. And the waters receded from the earth gradually, and the waters abated at the end of one hundred and fifty days.
Genesis 8:2-3 LEB
(A physical adjective suggesting a solid structure)
What Does the Bible Say About Firmament?
with him can you spread out the skies,
hard as a
molten mirror?
Job 37:18 LEB
(A physical adjective suggesting a solid structure)
Praise him, highest heavens, and
waters above the heavens.
Psalms 148:4 LEB
(Remember, the stars were placed in the heavens, so this means waters above the stars, which aligns with ANE cosmology. Water restrained by windows etc. Again suggesting a solid dome or a dome of solid nature.)
He is the one who
sits above the circle of the earth, and its inhabitants are like grasshoppers; the one who
stretches out the heavens like a veil and spreads them out
like a tent to live in,
Isaiah 40:22 LEB
(Like a tent, like a veil, above a circle of the earth. All descriptive words indicating a snow-globe cosmology)
who builds his
upper chambers in the heavens and lays the
foundation of his vault on the earth, who calls for the waters of the sea and pours them on the surface of the earth—Yahweh is his name.
Amos 9:6 LEB
(Chambers in accordance with ANE which release water to cause the flood of Genesis)
Thick clouds are a covering for him, so that he does not see; and
he walks about on the dome of heaven.’
Job 22:14 LEB
Similar to the following verse suggesting physical attributes of a solid dome. People observed God walking in human form atop the dome as also described in Ezekiel.
And they saw the God of Israel, and what was
under his feet was like
sapphire tile work and like the very heavens for clearness.
Exodus 24:10 LEB
(A physical adjective suggesting a solid structure)
Now the likeness above the heads of the living creatures was an expanse like the outward appearance of
awesome ice spread out above their heads upward
Ezekiel 1:22 LEB
(A physical adjective suggesting a solid structure)
And there was
a sound from above the expanse that was above their heads, and when they stood they lowered their wing
Ezekiel 1:25 LEB
(Again, sound from above the expanse suggesting that it wasn't millions of light-years away in accordance with ANE)
“The
pillars of heaven tremble, and they are astounded at his rebuke
Job 26:11 LE
(Pillars of heaven, in agreement with ANE in which pillars hold up the heavens)
And from
above the expanse that was above their heads there was the likeness of a throne, looking like a sapphire, and above the likeness of the throne was a likeness similar to the appearance of a human on it, but above
Ezekiel 1:26 LEB
(Above the expanse, meaning that it isn't in deep space some far off distance away)
Literally every single verse that gives any sort of description or detail about the firmament suggests that it is indeed firm and has some kind of solid property or quality to it.