Charles H. Spurgeon on Psalms 129:6

Let them be as the grass upon the housetops. They are rightly compared to grass on the housetops; for more contemptuously the Holy Ghost could not speak of them. For this grass is such, that it soon withereth away before the sickle be put into it. Yea, no man thinketh it worthy to be cut down, no man regardeth it, every man suffereth it to brag for a while, and to show itself unto men from the housetops as though it were something when it is nothing. So the wicked persecutors in the world, which are taken to be mighty and terrible according to the outward show, are of all men most contemptible. For Christians do not once think of plucking them up or cutting them down; they persecute them not, they revenge not their own injuries, but suffer them to increase, to brag and glory as much as they list. For they know that they cannot abide the violence of a vehement wind. Yea, though all things be in quietness, yet as grass upon the housetops, by little and little, withereth away through the heat of the sun, so tyrannies upon small occasions do perish and soon vanish away. The faithful, therefore, in suffering do prevail, and overcome; but the wicked in doing are overthrown, and miserably perish, as all the histories of all times and ages do plainly witness. —Martin Luther.