Heaven in the Old Testament

As I do my word study on salvation I am struck by the difference in the meaning of the word between the OT and the NT.  I wrote about this just the other day.  You can read it here.  https://randomobservationsofacommonchristian.blogspot.com/2017/09/salvation-on-earth.html

That has led me to do a little research on Heaven in the OT.  Not mentioned nearly as much as in the NT.  When it is mentioned, many times it isn't mentioned as clearly as in the NT either.  I was starting to wonder if it even existed in the OT at all so I googled "Heaven in the Old Testament". 

Turns out that a lot has been written on that subject.  I was looking for OT Scripture references to Heaven.  Here is one of the clearest ones that I found.

Daniel 12:1-3(NKJV)

    “At that time Michael shall stand up,      The great prince who stands watch over the sons of your people;     And there shall be a time of trouble,     Such as never was since there was a nation,     Even to that time.     And at that time your people shall be delivered,     Every one who is found written in the book.

    And many of those who sleep in the dust of the earth shall awake,     Some to everlasting life,     Some to shame and everlasting contempt.

    Those who are wise shall shine     Like the brightness of the firmament,     And those who turn many to righteousness      Like the stars forever and ever.

While it doesn't specifically say Heaven, the description fits the process that we have been taught.  Book of Life, everlasting life or everlasting shame.

It is some interesting reading if you want to study the issue some time.