Would you not say that everything "from the beginning" would be that of eternity as we would understand this. God has no beginning nor end as having always been eternal. I really do not think any of us would actually know if there was a gap as all the animals were created on the fifth day that would include what we call Dinosaurs as God did not create any other animals, but being evening to morning that we have to take into consideration would not be a 24 hour day as we know. If we look at Genesis 1:20-23 God created all sea life on the fifth day. On the six day God created all land animals Genesis 1:24-25. After all the animals were created then God said let us make man in our own image, vs. 27. So then God created man on the sixth day as we see once again the wording, evening and morning. so by the sixth day of evening and morning God has created everything and then rested on the seventh day, no evening or morning, just the seventh day, which could have begun the 24 hour period that we know today. When you go to Genesis 2 you read the generations of everything that God created on the sixth day of evening to morning and then proceeds to give details how Adam and Eve were created.
Explaining all of this I see no gap between what God created until He created man. Just my thoughts.
Thanks for sharing.
As for the term "eternity past," it is used to explain the time before man. As an example,
God planned the salvation of man in eternity past. Man perceives "in time" (hours, days, months etc.). The third Heaven could be said to have been created in eternity past.
As for the "Gap," (or, double "Gap" as I see it) one would have to go outside of Genesis, to other Bible passages. First, Satan is seen in the garden to tempt Eve in Genesis 3, but there is no mention of his creation. I believe he was created when God created (the third) heaven. Now, Job shows us that angels were present to witness the creation of the earth.
Job 38:1-7;
"Then the Lord answered Job from the whirlwind and said, “Who is this who darkens the divine plan By words without knowledge? Now tighten the belt on your waist like a man,
And I shall ask you, and you inform Me! Where were you when I laid the foundation of the earth? Tell Me, if you have understanding, Who set its measurements? Since you know.
Or who stretched the measuring line over it? On what were its bases sunk? Or who laid its cornerstone, When the morning stars sang together And all the sons of God shouted for joy?"
If angels were present to witness the creation of the earth, where was their abode? God created the habitat and then created the inhabitants. Therefore, (the third) heaven and its inhabitants were created before the current earth and man. This is "Gap" number 1.
Gen. 1:2; "And the earth was formless and void, and darkness was over the surface of the deep, and the Spirit of God was hovering over the surface of the waters."
Here we see that the earth was formless and void, yet, Isa. 45:18 states that the earth was not created this way; "For this is what the Lord says, He who created the heavens (He is the God who formed the earth and made it, He established it and did not create it as a waste place, but formed it to be inhabited): I am the Lord, and there is no one else."
How then, did it become "formless and void" in vs. 2?
Also, the creation account doesn't mention the creation of "the waters", yet the Spirit was "was moving over the surface of the waters."
Just a bit of my thinking.