"In the Bible, judgment is often treated as a reversal or undoing of 
creation.
E.g. the Flood reverses the Day 3 acts where God separated land from
sea, so that the whole earth is covered in water again.
In this case,
Jeremiah is making allusions to Genesis 1,
employing its motifs to indicate that the judgment he predicts will be
so devastating that it will be like creation is partly undone as well.
Jeremiah portrays the judgment going all the way back to Genesis 1:2, where the earth was formless and empty." CMI
And the earth was without form, and void;
Genesis 1:2
I beheld the earth, and indeed it was without form, and void;
Jeremiah 4:23