Luke 17:9

Doth he thank that servant...? i.e. does he feel or express any special gratitudeto him (ἔχει χάριν )-As a matter of fact, men are not in the habit of acknowledging the daily services of their dependents. Our Lord draws from this common circumstance of life a rebuke of the spirit which would spin out to eternity a selfish desire for personal rewards (Matthew 19:27; Matthew 20:21).

I trow not The words are probably genuine, though omitted in א, B, L, &c. There is a touch of irony in them, and doubtless they express a passing shade of disapproval at the thanklessness and discourtesy with which dependents are too often treated. The other side of the picture God's approval of our efforts is given in Luke 12:37; Revelation 3:20.