John Trapp on Job 21:18

Verſe 18. They are as ſtubble before the wind] Leſt any man ſhould ſay, How can theſe things befal thoſe that are ſo ſtrongly ſet, & firmly built? Well enough, ſaith Job, ſith when they are beſt bottomed or underlaid, they are but as ſtubble before the wind, &c. Haec conſideranda, ſaith Mercer, theſe things would be laid to heart, for hereby it appeareth that the wicked ſhall be deſtroyed ſuddenly, and certainly, certò, citò, penitus, Iſai. 17.13. That they can no more ſtand before a puniſhing God, then thiſtle-down before a whirle-wind, or a glaſſe-bottle before a Cannonſhot.