[Jesus continued,] "When a servant comes in from plowing or taking care of sheep, does his master say, 'Come in and eat with me'? No, he says, 'Prepare my meal, put on your apron, and serve me while I eat. Then you can eat later.' 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.'"
— Luke 17:7-10 NLT
In Jesus' day, a servant did not have any significant rights. A servant had to do what pleased his or her master regardless of thanks or praise. A servant had no right to expect approval or commendation. When a servant worked hard and completed a long list of demands, there was no expectation of praise; that servant only did what was expected. Jesus is Lord, Master, and Savior. He has called us to follow and serve him. Of course, the incredible blessing is that when we come to him as a servant, he welcomes us as a sister or brother and friend and, at the end of this life, will tell us "Come, ... inherit the Kingdom prepared for you from the creation of the world." 
Father, as I come and offer myself to your Son as a servant for his work and his glory, thank you for accepting me as your child and making me his sibling, a joint heir with your precious Son and my Savior. In his name, Jesus Christ the Lord, I pray. Amen.