Gerlinda,

Genesis 1:1 ¶ In the beginning God created the heaven and the earth.

 2 And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters.

Some years back, I was taught that the LORD first created a fully formed and filled earth, which later "became" without form and void, due to judgment upon a pre-Adamic earth. And that this is what Jeremiah wrote about that judgment, culminating in:

Jeremiah 4:23 I beheld the earth, and, lo, it was without form, and void; and the heavens, and they had no light.

However, it was not a judgment, but rather the manner of the creation, and what the LORD teaches us by that. There is nothing impossible with God, and he is Almighty (omnipotent). Therefore, the LORD could have made everything in one instance, but he didn't. In fact, Genesis chapter 1 teaches that the LORD spread the creation out over six days. He didn't need that much time to do it all, again, he could have done it all in an instant. Why did he do it in steps? Like when he healed the blind man in Mark 8:22-26 in two steps - Jesus didn't need to take two steps to heal anyone - he chose to do it that way to show something.

When the LORD made man in Genesis 1:26-27, as is detailed in Genesis chapter 2, it was in a similar stepped pattern as the earth:

Adam started out as the dust that the LORD had previously created earlier in chapter 1.

When he was but dust, Adam was without form, but then the LORD formed him:

And the LORD God formed man of the dust of the ground (Genesis 2:7)

Though formed, yet at this point, Adam was still void, but then the LORD filled him:

and breathed into his nostrils the breath of life; and man became a living soul (Genesis 2:7)

Adam went from being "without form and void", to being formed but still void, then to finally formed and filled.

II Peter 3:5 For this they willingly are ignorant of, that by the word of God the heavens were of old, and the earth standing out of the water and in the water:

 6 Whereby the world that then was, being overflowed with water, perished:

 7 But the heavens and the earth, which are now, by the same word are kept in store, reserved unto fire against the day of judgment and perdition of ungodly men.

In lines 5 & 7, Peter mentioned the earth, but in line 6 he mentioned the world. The earth is the planet, but the world is the collective family of man living upon it, sometimes referring to the entire system involving man on the earth. Man was created in Genesis 1:26, not in Genesis 1:1. The world of man was overflowed with water in Noah's day. Peter is speaking about that first judgment upon the whole world, by water, in Noah's day. Peter had previously referred to Noah's day in I Peter 3:20, and then in II Peter 2:5. The second judgment upon the world will be by fire, II Peter 3:7,10-12. 

The world is made up of men, not angels, as seen in John 3:16. The Father gave his only begotten Son because he loved the world. The Son was not given for the angels to be redeemed, but only for man. If II Peter 3:6 spoke of the world as a pre-Adamic race of angelic beings upon the earth before Genesis 1:2, then John 3:16 would have included those angelic beings, but that did not happen.

Gino