Charles Ellicott Commentary Amos 8:9

"And it shall come to pass in that day, saith the Lord Jehovah, that I will cause the sun to go down at noon, and I will darken the earth in the clear day." — Amos 8:9 (ASV)

Darken the earth.— The darkening of the sun at noon-day gives an image of confusion and terror . The eclipse of the sun that is here alluded to (see Excursus C), like the earthquake in the preceding verse, is employed as a powerful image of national calamity, the extinction of the royal house, and perhaps the final overthrow of Israel. (Ezekiel 32:7–10.)

EXCURSUS C (Amos 8:9).

That an eclipse is referred to here, and used as a figure to express the overwhelming calamities which were to darken Israel, can hardly be doubted when we compare the similar figurative use of the earthquake in the preceding verse. But to what eclipse does the prophet refer? Mr. J. W. Bosanquet has attempted to identify it with a very special one, mentioned in the Assyrian annals:—“In the eponymy of Bursagale, prefect of Gozan, the city of Asshur revolted, and in the month Sivan the sun was eclipsed.” This has been calculated by Hind to have occurred on June 15, 763 B.C. (So Rawlinson, Schrader, G. Smith, etc., contrary to Oppert’s view, which is untenable.)

If this eclipse was in the mind of the prophet, it is a fact of considerable importance in chronology. On the whole, however, it is more probable that the prophet was thinking of an earlier eclipse, which took place on February 9, 784 B.C. It was a total eclipse, the time of totality being about 1 p.m. at Jerusalem, thus exactly corresponding with the phraseology of this verse. So remarkable a phenomenon would naturally stamp itself for many years upon the mind of the people, and this vivid impression the prophet summons to his aid in foreshadowing the calamities of the last time.