Pro 27:3
The second pair of proverbs designates two kinds of violent passion as unbearable: 3 The heaviness of a stone, the weight of sand - A fool’s wrath is heavier than both.
We do not translate: Gravis est petra et onerosa arena, so that the substantives stand for strengthening the idea, instead of the corresponding adjective (Fleischer, as the lxx, Jerome, Syr., Targum); the two pairs of words stand, as 4a, in genit. relation (cf. on the contrary, Pro 31:30), and it is as if the poet said: represent to thyself the heaviness of a stone and the weight of sand, and thou shalt find that the wrath of a fool compared thereto is still heavier, viz., for him who has to bear it; thus heavier, not for the fool himself (Hitzig, Zöckler, Dächsel), but for others against whom his anger goes forth. A Jewish proverb (vid., Tendlau, No. 901) says, that one knows a man by his wine-glass (כוס), his purse (כיס), and his anger (כעס), viz., how he deports himself in the tumult; and another says that one reads what is in a man ביום כעסו, when he is in an ill-humour. Thus also כעס is to be here understood: the fool in a state of angry, wrathful excitement is so far not master of himself that the worst is to be feared; he sulks and shows hatred, and rages without being appeased; no one can calculate what he may attempt, his behaviour is unendurable. Sand, חול, as it appears, as to the number of its grains innumerable, so as to its mass (in weight) immeasurable, Job 6:3; Sir. 22:13. נטל the Venet. translates, with strict regard to the etymology, by ἅρμα.