Luke 17:9

“Does he thank the servant because he did the things that were commanded?”

Indeed this is so much so that the servant will not even expect to be thanked. He will recognise his place. He is merely doing what as a servant is his duty. It was a generally held view that servants must be kept in their place. But while we should certainly thank those who serve us in any way, it is perfectly reasonable to suggest that we do not deserve God's thanks. For He is our Creator and Redeemer, and all the gratitude is due from our side. The wonder is that He uses our frail services in the accomplishment of His mighty purposes. After all He could just as well achieve them without us. So we not only do no more than it is our duty to do, but our success is also wholly due to His gracious working.