Popping the Balloon
Now, pretend you are God sitting in the middle of this balloon.
You can see the fingers indenting the balloon all at once, they are all coming closer together, the greater the weight, the closer to the center of the balloon they go.
All the smaller fingers are slipping along the surface of the balloon towards the two main fingers pressing in the hardest. Eventually after sitting there for 20 billion+ years, the fingers on either side of the balloon are the only ones left and they touch in the center.
This will be called, "The Big Bang" by some future organism that figures out something is afoot.