Carl Friedrich Keil and Franz Delitzsch Old Testament Commentary

With the אלהי, which constrains God in faith, the "thundering down" begins afresh. גּלגּל signifies a wheel and a whirling motion, such as usually arises when the wind changes suddenly, then also whatever is driven about in the whirling, Isa 17:13. (Note: Saadia, who renders the גּלגּל in Psa 77:19 as an astronomical expression with Arab. 'l-frk, the sphere of the heavens, here has professedly Arab. kâlgrâblt, which would be a plural from expanded out of Arab. grâbı̂l, "sieves" or "tambourines;" it is, however, to be read, as in Isa 17:13, Codex Oxon., Arab. kâlgirbâlt. The verb Arab. garbala, "to sift," is transferred to the wind, e.g., in Mutanabbi (edited with Wahidi's commentary by Dieterici), p. 29, l. 5 and 6: "it is as though the dust of this region, when the winds chase one another therein, were sifted," Arab. mugarbalu (i.e., caught up and whirled round); and with other notional and constructional applications in Makkarı̂, i. p. 102, l. 18: "it is as though its soil had been cleansed from dust by sifting," Arab. gurbilat (i.e., the dust thereof swept away by a whirlwind). Accordingly Arab. girbâlat signifies first, as a nom. vicis, a whirling about (of dust by the wind), then in a concrete sense a whirlwind, as Saadia uses it, inasmuch as he makes use of it twice for גּלגּל. So Fleischer in opposition to Ewald, who renders "like the sweepings or rubbish.") קשׁ (from קשׁשׁ, Arab. qšš, aridum esse) is the cry corn-talks, whether as left standing or, as in this instance, as straw upon the threshing-floor or upon the field. Like a fire that spreads rapidly, laying hold of everything, which burns up the forest and singes off the wooded mountain so that only a bare cone is left standing, so is God to drive them before Him in the raging tempest of His wrath and take them unawares. The figure in Psa 83:15 is fully worked up by Isaiah, Isa 10:16-19; לחט as in Deu 32:22. In the apodosis, Psa 83:16, the figure is changed into a kindred one: wrath is a glowing heat (חרון) and a breath (נשׁמה, Isa 30:33) at the same time. In Psa 83:17 it becomes clear what is the final purpose towards which this language of cursing tends: to the end that all, whether willingly or reluctantly, may give the glory to the God of revelation. Directed towards this end the earnest prayer is repeated once more in the tetrastichic closing strain.