Job 3:9

“Let the stars of the twilight thereof be dark, etc.] Either of the morning or evening twilight; both may be meant, rather the latter, because of the following clause; the sense is, let not these appear to adorn the heavens, and to relieve the darkness of the night, and make it more pleasant and delightful, as well as to be useful to travellers and sailors: let it look for light, but [have] none; that is, either for the light of the moon and stars, to shine in the night till daybreak, or for the light of the sun at the time when it arises; but let it have neither; let the whole time, from sun setting to sunrising, from one twilight to another, be one continued gross and horrible darkness;…”

“dawning of the day--literally, "eyelashes of morning." The Arab poets call the sun the eye of day. His early rays, therefore, breaking forth before sunrise, are the opening eyelids or eyelashes of morning.”

“Let the stars of the twilight thereof be dark - That is, be extinguished, so that it shall be total darkness - darkness not even relieved by a single star. The word here rendered “twilight” נשׁף nesheph means properly a breathing; and hence, the evening, when cooling breezes “blow,” or gently breathe. It is used however, to denote both the morning and the evening twilight, though here probably it means the latter. He wishes that the evening of that night, instead of being in any way illuminated, should “set in” with total darkness and continue so. The Septuagint renders it, “night. Let it look for light, but have none - Personifying the night, and representing it as looking out anxiously for…”

“The stars - Let the stars, which are the glory and beauty of the night, be covered with thick darkness, and that both in the evening twilight, when the stars begin to shine; and also in the farther progress of the night, even 'till the morning dawns. Look - Let its darkness be aggravated with the disappointment of its expectations of light. He ascribes sense or reasoning to the night, by a poetical fiction, usual in all writers. Dawning - Heb. the eye - lids of the day, the morning - star which ushers in the day, and the beginning, and progress of the morning light, let this whole natural day, consisting of night and day, be blotted out of the catalogue of days. Job 3:10”

“3:9 Venus and Mercury, the morning stars, herald the dawn (38:7).”

“look for light: Job 30:26; Jer 8:15, Jer 13:16 the dawning of the day: Heb. the eye-lids of the morning, Job 41:18 Job 3:10”