First let me try to show from the scripture how God created the universe through the heart (mind) of a man and how man makes everything decay because he created his own perspective (reality) which became falsehood rather than the truth that God implanted in him.
It has been described that God created from water :
2 Pet 3:5
But they deliberately overlook the fact that long ago by God’s word the heavens existed and the earth was formed out of water and by water,6through which the world of that time perished in the flood.
And we see in Gen 1 that before anything, only darkness was covering the surface of the deep and the spirit of God over the waters.
We see the heart of man being described as deep waters:
Prov 20:5
The intentions of a man’s heart are deep waters, but a man of understanding draws them out.
Proverbs 18:4The words of a man's mouth are deep waters; the fountain of wisdom is a bubbling brook.
Psalm 24:1 A Psalm of David. The earth is the LORD’s, and the fullness thereof, the world and all who dwell therein. 2
For He has founded it upon the seas and established it upon the waters.
A superficial look would cheat a man that God created everything from H2O but that's not the case. The spirit (mind) of man was part of God initially:
Ecc 3:
11He has made everything beautiful in its time. He has also set eternity in the hearts of men, yet they cannot fathom the work God has done from beginning to end.
So reality is only actualized in the heart of a man and everything exist with the perspective of a man. There's one proof that God created through the heart of a man; God created but never created evil, evil was found in the heart of a man.
So when God says day 1 and day 2 and 3 and 1 week, it is all as per what the spirit of a man would perceive when it was blown into the clay structure. And for this reason, Genesis 2 starts the creation story from another angle:
Gen 2:
4This is the account of the heavens and the earth when they were created, in the day that the LORD God made them.
5Now no shrub of the field had yet appeared on the earth, nor had any plant of the field sprouted; for the LORD God had not yet sent rain upon the earth, and there was no man to cultivate the ground.
6But springs
a welled up from the earth and watered the whole surface of the ground.
This is a poetic way of describing the heart of a man, it is the garden of Eden where satan was found (not created).