Charles H. Spurgeon on Psalms 32:9

Be ye not as the horse, or as the mule, etc. Consider the causes why a broken leg is incurable in a horse, and easily curable in a man. The horse is incapable of counsel to submit himself to the farrier; and therefore in case his leg be set he flings, flounces, and flies out, unjointing it again by his misemployed mettle, counting all binding to be shackles and fetters unto him: whereas a man willingly resigns himself to be ordered by the surgeon, preferring rather to be a prisoner for some days, than a cripple all his life. Be ye not as the horse, or as the mule, which have no understanding; but "let patience have its perfect work in thee." Jas 1:4. Thomas Fuller.