It is important to know that yes, as individuals, we need to be grateful, but as servants we need to be humble. A humble servant is lowly in self-estimation. There is no pride or ego that needs the flattery of gratitude. Humbleness is modesty, but it’s not weakness. A great deal of strength is required to completely set your self…
"And does the master thank the servant for doing what he was told to do? Of course not. In the same way, when you obey me you should say, ‘We are unworthy servants who have simply done our duty.’” So says Jesus.