Then the earth is recreated according the genesis story. And, yes, I do believe that they lived that long. Adam was not created as a son of man. He was created almost as an angel and could use 100%of his brain. Had he not sinned with Eve and the snake "Lucifer", he would have remained an eternal being. But, he did and they were cast out of Eden. Their genealogical make up gave them extraordinary long lives.
Until, they began mating with the angels and creating the nephalim. This was Lucifer's way of getting back at God and taking back the earth. Of course, the Lord wasn't having this and made Noah different from the previous men, the flood came and men's age was confined to 120 years.
After that, though, there were other occasions that the nephalim were created. The children of Israel had to take the holy land back from them and even David had to fight one. But the angels who continued to"leave their first estate", which means to remain unmarried and not procreate, were rounded up and thrown into the bottomless pit. It shouldn't be too much longer now and they will be released... Abaddan the destroyer.
You see, I believe in the ancient aliens. I just believe that they are angels from the planet that is called heaven in the Bible. I believe that this planet was given to Lucifer... Until he decided to take over heaven. Maybe that's what some of the pyramids were? Maybe they were, and possibly still are, some kinds of weapons that shoot some kind of nuclear, laser, weapon of mass distruction. Who knows? But I do know this... There is and has been a war going on for thousands of years for this planet and everything on it. I don't believe that the Bible explains everything single bit of it. I don't believe that the dead sea Scrolls explain everything single bit of it. And I certainly don't think that science understands every single bit of it. Science is constantly acquiring new pieces of evidence that changes the way it thinks. But it does all of this on the theory of evolution. We aren't evolving. Most, if not all of that, was destroyed 12800 years ago. We were created then and have devolved from what we were created to be.
I just think that if religion could agree that the world is older than 10000 years old and science could agree that the earth was reseeded around 6000 years ago, we could go much further than the rate we are going now.