Proverbs 21:22

22 A wise man scaleth a city of the mighty; And casteth down the fortress in which they trusted. Ecc 9:14. is a side-piece to this, according to which a single wise man, although poor, may become the deliverer of a city besieged by a great army, and destitute of the means of defence. עלה, seq. acc., means to climb up, Joe 2:7; here, of the scaling of a fortified town, viz., its fortress. עז is that which makes it עיר עז, Isa 26:1 : its armour of protection, which is designated by the genit. מבטחה, as the object and ground of their confidence. The vocalization מבטחה, for mibtachcha (cf. Jer 48:13 with Job 18:14), follows the rule Gesen. 27, Anm. 2b. The suff., as in לאתננּה, Isa 23:17, is lightened, because if its mappik, Michlol 30b; vid., regarding the various grounds of these formae raphatae pro mappicatis, Bttcher, 418. If a city is defended by ever so many valiant men, the wise man knows the point where it may be overcome, and knows how to organize the assault so as to destroy the proud fortress. With ויּרד, he brings to ruin, cf. עד רדתּהּ, Deu 20:20.

Note, 1. Those that have power are apt to promise themselves great things from their power. The city of the mighty thinks itself impregnable, and therefore its strength is the confidence thereof, what it boasts of and trust in, bidding defiance to danger. 2. Those that have wisdom, though they are so modest as not to promise much, often perform great things, even against those that are so confident of their strength, by their wisdom. Good conduct will go far even against great force; and a stratagem, well managed, may effectually scale the city of the mighty and cast down the strength it had such a confidence in. A wise man will gain upon the affections of people and conquer them by strength of reason, which is a more noble conquest than that obtained by strength of arms. Those that understand their interest will willingly submit themselves to a wise and good man, and the strongest walls shall not hold out against him.

21:22 A wise military strategist can devise ways to defeat stronger forces. This makes wisdom superior to raw power (cp. Eccl 7:12; 9:13-18).