Today Christ Jesus says to us: "When you have done all you have been commanded, say, 'We are unprofitable servants; we have done what we were obliged to do'" (Luke 17:10).
His command to us is simple, yet it is not easy: "Love one another. As I have loved you, so you also should love one another" (John 13:34).
In the Christian life there is no room for grumbling to the Lord, the no room for whining or complaining about what we have done for him or for others. We are his servants; he is the Master and Teacher (cf. John 13:13).
We ought to serve him by serving and loving one another not because of what can gain by doing so, but simply because he has loved us. The true and faithful servant of a master serves without expecting something back; he serves the master out of loyalty and trust.
May the same be said of us.