I. As "the waters wear the stones," they teach us a lesson of perseverance. They write upon the rocks a parable of patient diligence. There are some things which must be done at a stroke, on the spur of the moment, or the opportunity is gone for ever. But the eye to see what is to be done, the skill to aim the stroke, the strength to give it, the coolness and courage to be as steady and self-possessed at the moment as if you had plenty of time to spare these can come only by slow, patient, persevering work, like that with which "the waters wear the stones."
II. The waters as they wear the stones may teach us a parable of life. They may remind us what little things may in time do great mischief. Not a few homes could be found in which it would pay to have this motto put up in golden letters, if only everybody would learn its lessons. They seem to lack nothing that is needed for a happy home. What is amiss? Only this, that no one has learned how much both the happiness and the unhappiness of life depend on little things. Little opportunities for a kind action, a kind word, a kind look, slip by continually. And so, because life is mostly made up of little things, the happiness of home is bit by bit destroyed, even as "the waters wear the stones."
III. The water-worn rock teaches us another parable a parable of character. Our character depends chiefly on the habits we form. There are good habits and bad habits. And how do these habits grow? Little by little, as "the waters wear the stones." The Bible speaks of a "stony heart" that is, a heart hardened in sinful habits, in unbelief and forgetfulness of God. We cannot change the past, but God can forgive it. Tears of repentance cannot wash away one sin, but the blood of Jesus Christ cleanses from all sin.
E. R. Conder, Drops and Rocks,p. 1.