I know this view and used to consider it as a strong possibility. So this view is not new to me. Even today, many creationists hold to the same view you do. But I believe it deviates from the actual Genesis account. Could it be true? I suppose it could be. So I am in no position to say for absolute certain that this view on creation isn't true. However, it does contradict the order of creation and makes Day 4 an oddity among the 6 Days of creation. Day 1, Day 2, Day 3, Day 5, Day 6 are all literal. But then they say Day 4 was not literal but it really happened on Day 1. So why, then, didn't God just say He created the sun, moon and stars on Day 1?
Good questions from that point of view. Let's try something that might be difficult, or easy, to you.
I'm used to doing it, so I have practice, and it's become easy over time.
Let's read
without a point of view for a while.
As if reading fresh for the first time, without any preconceptions at all.
Ok, when ready...:
Going to try to read with as little preconception as it is possible to have (for me, I can get to zero):
========================
1 In the beginning God created the heavens and the earth.
(All the universe!)
2 Now the earth was formless and empty, darkness was over the surface of the deep, and the Spirit of God was hovering over the waters.
3 And God said, “Let there be light,” and there was light.
4 God saw that the light was good, and he separated the light from the darkness.
5 God called the light “day,” and the darkness he called “night.” And there was evening, and there was morning—the first day.
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Now, if you don't have a viewpoint, and you just read the words, then...
All the Universe is created in verse 1, and the Earth.
Next, we simply read in verse 2 that Earth existed with a formless look, and was like
or was a
water world -- oceans are a
formless surface constantly in motion, waves....
And dark. That's all just the words of verse 2 read in the most simple way. ( "simple" = with the
least external ideas and preconceptions)
And then in verse 3, God brings light down onto the Earth, and this light is onto Earth in particular -- the location we are at in this telling --
so it's not about the light elsewhere in the more distant parts of the Universe, (which has several kinds of light)....but light down onto Earth itself enough to make what we now
call "day".
We read in verses 4 and 5 that the day and night cycle begins.
Now, the least complex way to read this would be that Earth is now lit and has a full fledged night and day cycle just like we do now. It's just the words taken without extra ideas.
While one could theorize some more complex and esoteric stuff like God made a special temporary light instead of the sun (as I heard from one person once), the most simple way to read it is we have night and day happening -- and that in our everyday experience means that the
sun is shining on Earth and Earth is rotating, and thus you have
"And there was evening, and there was morning—the first day. "
Trying to continue to just the words read in the least complex way. (don't worry, day 4 is coming along soon too)
But having a day and night cycle does
not mean that the sun giving the light would be visible, or the moon, or the stars. To see them when you are on the Earth one
needs a cloudless sky. All of us have experienced days in a row (or maybe most all of us if not all) where we didn't see the sun or stars due to clouds.
The next verse can be hard to read simply, so let's see several translations:
Genesis 1:6 And God said, "Let there be an expanse between the waters, to separate the waters from the waters."
New International Version
And God said, “Let there be a vault between the waters to separate water from water.”
New Living Translation
Then God said, “Let there be a space between the waters, to separate the waters of the heavens from the waters of the earth.”
English Standard Version
And God said, “Let there be an expanse in the midst of the waters, and let it separate the waters from the waters.”
But the next 2 verses help:
7 So God made the vault and separated the water under the vault from the water above it. And it was so.
8 God called the vault “sky.” And there was evening, and there was morning—the second day.
Ah! this 'vault' or 'expanse' or 'space' is actually just the 'sky' above our heads, what we today call the atmosphere.
It seems the simplest way to read this to me is to think of it as the air
before being:
Before: air full of
rain/water/mist/fog ==> which would have
no clear boundary -- nothing is separated. Nothing is distinct.
After: the air clears enough to see through to great distances up to high clouds and distant ocean surface.
A clear separation happens so that the waters below -- on the surface of Earth, become clearly distinct and seeable -- you can see them. And you can see far above what might be with swirling clouds or mist above. Or as in the text, "waters above".
Just the simplest way to read it I can think of here.
So, now, for the first time, one can
see there are oceans and some amount of clear air one can see through, and then higher above we can
see something that might be clouds high above, and all 3 are distinct and separate to the eye.
For the first time. The waters above have been separated from the waters below.
9 And God said, “Let the water under the sky be gathered to one place, and let dry ground appear.” And it was so.
10 God called the dry ground “land,” and the gathered waters he called “seas.” And God saw that it was good.
The first visible dry land appears from the oceans!
!

Praise the Lord.
11 Then God said, “
Let the land produce vegetation: seed-bearing plants and trees on the land that bear fruit with seed in it, according to their various kinds.” And it was so.
12 The land produced vegetation: plants bearing seed according to their kinds and trees bearing fruit with seed in it according to their kinds.
And God saw that it was good. [notice we read it is "good" now the 3rd time, and on the 3rd day, a repeating message -- this is a good place for us] 13 And there was evening, and there was morning—the third day.
14 And God said, “Let there be lights in the vault of the sky to separate the day from the night, and let them serve as signs to mark sacred times, and days and years,
15 and let them be lights
in the vault of the sky to give light on the earth.” And it was so.
The lights above are now visible! You can see through the air, the 'sky' the stars and moon and the sun, it's now visible, because as we just read before, the air had cleared enough to see a distinct ocean, water below, and above swirling water/clouds up higher, and now on day 4, the air/sky has cleared even more.
16 God made two great lights—the greater light to govern the day and the lesser light to govern the night. He also made the stars.
17God set them in the vault of the sky to give light on the earth,
18 to govern the day and the night, and to separate light from darkness. And God saw that it was good.
19And there was evening, and there was morning—the fourth day.
This is an explanation for
why we have the Sun, moon and stars, instead of just a gray uniform sky that has day and night without any sun or moon or stars....
We could have had just a gray sky, and still would need to learn to turn to God in faith...just like now. But we have more than just a blank gray sky, we have a way to notice the passage of time, of the day, of the months, of the year....!
Very, very helpful to a mortal being that won't live here in this body forever, and needs to notice they have limited time, and time is passing.