Job 17:5

“He that speaketh flattery to [his] friends, etc.] As Job’s friends did to him when they promised great outward prosperity, and a restoration to his former state, and to a greater affluence upon his repentance and reformation; or when they spoke deceitfully for God, pretending great regard to the honour of his justice and holiness, and therefore insisted on it that he must be a wicked man and an hypocrite, that was afflicted by him, as Job was: even the eyes of his children shall fail; so hateful are some sins to God, and particularly deceitful tongues, and flattering lips, that he will punish them in their posterity; the eyes of their children shall fail for want of sustenance, and while…”

“The Hebrew for "flattery" is "smoothness"; then it came to mean a prey divided by lot, because a smooth stone was used in casting the lots (Deu 18:8), "a portion" (Gen 14:24). Therefore translate, "He that delivers up his friend as a prey (which the conduct of my friends implies that they would do), even the eyes," &c. [NOYES] (Job 11:20). Job says this as to the sinner's children, retorting upon their reproach as to the cutting off of his (Job 5:4; Job 15:30). This accords with the Old Testament dispensation of legal retribution (Exo 20:5).”

“He that speaketh flattery to his friends - Noyes renders this, “He that delivers up his friend as a prey, the eyes of his children shall fail.” So Wemyss, “He who delivers up his friends to plunder.” Dr. Good, “He that rebuketh his friends with mildness, even the eyes of his children shall be accomplished.” The Septuagint, “He announces evil for his portion; his eyes fail over his sons.” The Vulgate, “He promises spoil to his companions, and the eyes of his sons fail.” The word rendered “flattery” (חלק chêleq) properly means “that which is smooth, smoothness” (from חלק châlaq to be smooth); and thence it denotes “a lot” or “portion,” because “a smooth stone” was anciently used to cast lots…”

“He that: Job 32:21, Job 32:22; Psa 12:2, Psa 12:3; Pro 20:19, Pro 29:5; Th1 2:5 the eyes: Exo 20:5; Deu 28:65; Kg1 11:12; Lam 4:17 Job 17:6”