Pondering

What is this New Heaven and New Earth?
What is the New Jerusalem with walls as thick as 144 cubits?
What about the rewards in heaven awaiting those whose name is in the Book of Life?
I recognise that Christians shouldn't worry about all these and have no fear of what is to come.
At the same time I think many out there are pondering these questions.
What did John actually saw?

Some are saying the the very fabric of society is breaking.
Communities world wide are in a limbo.
There is a continuous rumour of wars and wars.
Earthquakes and suffering.
But the peace treaty with Israel remains the waiting sign.
He will come like a thief in the night.
Therefore, be prepared irregardless of the times.

Just thoughts that have been on mind lately.