Is God the Rewarder of the Instruments in His Hands?

Human beings are god's primary created instrument for accomplishing in the world what he wants done. The bible is very clear that god is the rewarder of those who seek him. And i think it is fitting that this gladness finds expression toward the morally responsible human instruments in god's hands as well. An expression thankfulness is simply an expression of humility. It says, i have become your debtor, and i don't resent it as though you made me a welfare case. I receive it, and i am glad for it.