Luke 17:7-10

Suppose one of you has a servant. This parable is based on the custom of having the same servant work in the fields and in the house. The servant expected to serve his master first, and himself last! The servant does not deserve thanks for obeying orders. There is no special merit in doing what you are supposed to do. It is the same with you. Since in God's sight no one can even fulfill their duty (Psalms 143:2), it is not possible for someone to do more than their duty. One who has great faith has no reason to be proud of what he does! God owes us nothing just because we do a good job. The eternal reward comes through grace, not debt (Romans 11:6; Ephesians 2:4-10). But notice the warning in Romans 6:1-2.