Luke 17:9

Boast not thyself then that thou hast been a good servant. Thou hast done what thou oughtest to have done. The sun obeys, the moon submits herself, the angels are subject; let us not then seek praise from ourselves. Therefore He adds in conclusion, So likewise ye, when ye have done all good things, say, We are unprofitable servants, we have done that which it was our duty to do.

Our Lord teaches us that it is no more than the just and proper right of a master to require, as their bounden duty, subjection from servants, adding, Doth he thank that servant because he did the things that were commanded him? I trow not. Here then is the disease of pride cut away. Why boastest thou thyself? Dost thou know that if thou payest not thy debt, danger is at hand, but if thou payest, thou doest nothing thankworthy? As St. Paul says, For though I preach the Gospel I have nothing to glory of, for necessity is laid upon me, yea, woe is unto me if I preach not the Gospel. (1 Cor. 9:16.) Observe then that they who have rule among us, do not thank their subjects, when they perform their appointed service, but by kindness gaining the affections of their people, breed in them a greater eagerness to serve them. So likewise God requires from us that we should wait upon Him as His servants, but because He is merciful, and of great goodness, He promises reward to them that work, and the greatness of His loving-kindness far exceeds the labours of His servants.

Because faith makes its possessor a keeper of God's commandments, and adorns him with wonderful works; it would seem from thence that a man might thereby fall into the sin of pride. Our Lord therefore forewarned His Apostles by a fit example, not to boast themselves in their virtues, saying, But which of you having a servant plowing, &c.