For I know [that] my redeemer liveth ...

Job confesses his faith in God and his hope in resurrection at the worst of his suffering. Job 19:25-27 read:

For I know [that] my redeemer liveth, and [that] he shall stand at the latter [day] upon the earth: And [though] after my skin [worms] destroy this [body], yet in my flesh shall I see God: Whom I shall see for myself, and mine eyes shall behold, and not another; [though] my reins be consumed within me.

Here is hymn "I Know That My Redeemer Liveth":

I know that my Redeemer liveth,
And on the earth again shall stand;
I know eternal life He giveth,
That grace and power are in His hand.

Refrain

I know, I know, that Jesus liveth,
And on the earth again shall stand;
I know, I know, that life He giveth,
That grace and power are in His hand.

I know His promise never faileth,
The Word He speaks, it cannot die;
Though cruel death my flesh assaileth,
Yet I shall see Him by and by.

Refrain

I know my mansion He prepareth,
That where He is there I may be;
O wondrous thought, for me He careth,
And He at last will come for me.

Refrain