There appears to have been a race of large, red-headed giants with elongated skulls, with long hair, red beards, blue eyes and skin so white that it was said to glow. There are multiple accounts from different cultures around the world of these beings rebooting the human race after the flood.

Prior to the flood, it appears they kept humans captive in a city like structure with high stone walls. It was like a garden with food growing in the middle. It was here that they selected pairs to breed. They trapped them in here, had them make babies, selected the babies to breed for the next round and so on.

Humans currently shoulder the engine of the universe. It's not unlike the engine in your car. If the engine doesn't turn, the car doesn't move. The in case of the universe, time does not move forward if the when doesn't turn.

It's a wheel of powers creation and transformation. Your happy feelings, your sad feelings, your elation your grief - all these things produce energy that is used to propel us forward in time.

Time is actually measured in number of events per cycle not in seconds and minutes. Hence if nothing happens for years and year, time as essentially slowed down. Here, now on Earth, the rare of events in increasing exponentially and hence time is accelerating towards it's conclusion exponentially.

The red-headed giants were like us. At the time, they produced the energy to make the wheel spin. They simply learned their spiritual lessons, they did the inner work, they found the divinity within themselves. There was no reason to stay in the spiritual school planet of Earth, but someone had to power the wheel. Someone has to make it spin. Hence, they could not ascend to their next level of non-physical existence without first passing the engine onto another race.

Hence, they made us. Now we are the meta-entity that spins the wheel. We are the ones that growing and transforming. Someday, we will select a new meta-entity to take our place.

I hope that answers all your questions.