Old testament: where is Eternal Life and Judgement discussed?

Question

When Jesus was teaching of eternal life (Rich man and Lazarus, also Martha and Mary's brother Lazarus being raised from death) the people listening didn't think it was a new and novel idea: your soul lasts forever and you shall be judged.

Where is this taught in the Old Testament? I find Jesus telling the Saducees that "I am the God of Abraham, the God of Issac, and the God of Jacob", which is suggesting that Abraham, Issac and Jacob are not dead and gone (I was the God of Abraham, etc.).

Are there other places where it's made plain?

Answer 1

Salvation is often mentioned, and Psalms 9 carries the idea that the soul lives on after death, but the most direct teaching I could find is in Daniel 12:2

Daniel 12:2

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

Here are some of the more obvious teachings about the judgement:

Ps. 9:7

But the LORD shall endure forever; He has prepared His throne for judgment.

Ps. 50:4

He shall call to the heavens from above, And to the earth, that He may judge His people:

Eccl. 3:17

I said in my heart, “God shall judge the righteous and the wicked, For there is a time there for every purpose and for every work.”

Eccl. 11:9

... But know that for all these God will bring you into judgment.

Eccl. 12:14

For God will bring every work into judgment, Including every secret thing, Whether good or evil.