The sun... and the moon. — These words, recalling some of the portents in the ancient history of the Jews (especially as instanced in some of the plagues of Egypt) are taken up by our Lord Himself, as ushering in the great day of judgment; and they are echoed again by St. John in the vision of the opening of the sixth seal: “For the great day of His wrath is come, and who shall be able to stand?” (Comp. Joel 2:11 of this chapter.) The sun and moon, &c., may include the luminaries in heaven and the potentates on earth.
Related Commentaries of Joel 2:30
Joel 2:30-31
30 And I will shew wonders in the heavens and in the earth, blood, and fire, and pillars of smoke.
31 The sun shall be turned into darkness, and the moon into blood, before the great and the terrible day of the LORD come.