“The whole passage is pointing to future, not past.”
In the passage Jeremiah is pointing to the future by making reference to a past event. “without for an void” sound familiar? read Genesis 1:2.
Which is not the way God initially created the Earth: Creating the Earth and then saying the creation is without form and void is a contradiction:
Isaiah 45:18 -
For thus saith the LORD that created the heavens; God himself that formed the earth and made it; he hath established it, he created it not in vain, he formed it to be inhabited: I am the LORD; and there is none else.
No, he is speaking to a future event, when the Sun will be darkened, and the moon will not give her light, when the mountains and hills will tremble.
without for an void sound familiar? read Genesis 1:2.
I think you may find more information in studying the words tohu and bohu in Hebrew.
I find 'gap theory' to be a tired extrapolation with very little evidence, whose sole purpose is to shoehorn evolution into Christianity.
If you care to believe that the Earth was fully formed and functional for billions of years before the creation of the heavens and the hanging of the stars, before the sun and the moon, that is your business. But to my mind, that is a huge amount of history to pack into one verse, especially with nothing more to back it up.
Sooner or later, if you would choose to study the Prophecy and the the mechanisms of prophecy (particularly in this case, The Grand Jubilee and the genealogy from Adam to Messiah), and the way that these things foretell prophecy, you will find that your position does damage. EVERY word of YHWH is true, and every man a liar.