Charles Ellicott Commentary Job 5:14

"They meet with darkness in the day-time, And grope at noonday as in the night." — Job 5:14 (ASV)

Darkness in the daytime. —This is possibly an allusion to the Egyptian plague of darkness that may be felt (Exodus 10:21), as the words used are similar. This may be a note of probable date. (Compare Isaiah 59:10, where the thoughts correspond, but the words differ.) This is one of the many passages of Job in which there seems to be an indication of some acquaintance with the events related in the Pentateuch, though the points of contact are too slight for us to be quite sure of it.