Adam Clarke on Job 14:2

He cometh forth like a flower - This is a frequent image both in the Old and New Testament writers; I need not quote the places here, as the readers will find them all in the margin.

He fleeth also as a shadow - Himself, as he appears among men, is only the shadow of his real, substantial, and eternal being. He is here compared to a vegetable; he springs up, bears his flower is often nipped by disease, blasted by afflictions and at last cut down by death. The bloom of youth, even in the most prosperous state, is only the forerunner of hoary hairs, enfeebled muscles, impaired senses, general debility, anility, and dissolution. All these images are finely embodied, and happily expressed, in the beautiful lines of a very nervous and correct poet, too little known, but whose compositions deserve the first place among what may be called the minor poets of Britain. See at the end of the chapter, Job 14:22 (note).