Wherefore do I take my flesh in my teeth - The meaning of the proverbial expressions in this verse is not very clear. They indicate a state of great danger; but the exact sense of the proverbs it has been difficult to ascertain. Some have supposed that the phrase "to take the flesh in the teeth," is significant of a state of famine, where a man dying from this cause would cease upon his own flesh and devour it; others, that it refers to the contentions of voracious animals, struggling for a piece of flesh; others, that it refers to the fact that what is borne in the teeth is liable to be dropped, and that Job regarded his life as in such a perilous condition. Schultens regards it as denoting that bold courage in which a man exposes his life to imminent peril. He supposes that it is to be taken in connection with the previous verse, as intimating that he would go forward and speak at any rate, whatever might be the result.
He translates it, "Whatever may be the event, I will take my flesh in my teeth, and my life in my hand." In this interpretation Rosenmuller concurs. Noyes renders it, "I will count it nothing to bear my flesh in my teeth." Good, "Let what may - I will carry my flesh in my teeth; ' and supposes that the phrase is equivalent to saying, that he would incur any risk or danger. The proverb he supposes is taken from the contest which so frequently takes place between dogs and other carnivorous quadrupeds, when one of them is carrying a bone or piece of flesh in his mouth, which becomes a source of dispute and a prize to be fought for. The Vulgate renders it, "Quare lacero carnes meus dentibus meis." The Septuagint, "Taking my flesh in my teeth, I will put my life in my hand." It seems to me, that the language is to be taken in connection with the previous verse, and is not to be regarded as an interrogatory, but as a declaration. "Let come upon me anything - whatever it may be - מה mâh - Job 13:13 on account of that, or in reference to that - על־מה ‛al-mâh - Job 13:14, I will take my life in my hand, braving any and every danger."
It is a firm and determined purpose that he would express his sentiments, no matter what might occur - even if it involved the peril of his life. The word "flesh" I take to be synonymous with life, or with his best interests; and the figure is probably taken from the fact that animals thus carry their prey or spoil in their teeth. Of course, this would be a poor protection. It would be liable to be seized by others. It might even tempt and provoke others to seize it: and would lead to conflict and perils. So Job felt that the course he was pursuing would lead him into danger, but he was determined to pursue it, let come what might.
And put my life in mine hand - This is a proverbial expression, meaning the same as, I will expose myself to danger. Anything of value taken in the hand is liable to be rudely snatched away. It is like taking a casket of jewels, or a purse of gold, in the hand, which may at any moment be seized by robbers. The phrase is not uncommon in the Scriptures to denote exposure to great peril; compare Psalm 119:109, "My soul is continually in my hand;" 1-Samuel 19:5, "For he did put his life in his hand, and slew the Philistine;" Judges 12:3, "I put my life in my hands, and passed over against the children of Ammon." A similar expression occurs in the Greek Classics denoting exposure to imminent danger - ἐν τῇ χειρὶ τὴν ψυχὴν ἔχει en tē cheiri tēn psuchēn echei - "he has his life in his hand;" see Rosenmuller on Psalm 119:109. The Arabs have a somewhat similar proverb, as quoted by Schultens, "His flesh is upon a butcher's block."

Wherefore do I take my flesh in my teeth - A proverbial expression. I risk every thing on the justice of my cause. I put my life in my hand, 1-Samuel 28:21. I run all hazards; I am fearless of the consequences.

Wherefore do I (e) take my flesh in my teeth, and put my life in mine hand?
(e) Is not this a revealed sign of my affliction and that I do not complain without cause, seeing that I am thus tormented as though I should tear my own flesh, and put my life in danger?

Wherefore do I take my flesh in my teeth,.... Or bite my lips, to keep in my words, and refrain from speaking? I will not do it:
and put my life in my hand? or, expose it to danger by a forced silence; when I am ready to burst, and must if I do not speak; I will not thus endanger my life; it is unreasonable I should, I will speak my mind freely and fully, that I may be refreshed; so Sephorno interprets it of Job's putting his hand to his mouth, that he might be silent; and of putting a forcible restraint upon himself, that he might not declare what was upon his mind; see Job 13:19; but others, as Bar Tzemach, take the sense to be, what is the sin I have committed, that such sore afflictions are laid upon me; that through the pain and distress I am in, I am ready to tear off my flesh with my teeth, and my life is in the utmost danger? and some think he was under a temptation to tear his own flesh, and destroy himself; and therefore argues why he should be thus hardly dealt with, as to be exposed to such a temptation, and thrown in such despair, which yet he laboured against; but rather the meaning is, in connection with the preceding verse, let whatsoever will come upon me, "at all events, I will take my flesh in my teeth, and I will put my life in my hand" (l); I will expose myself to the greatest dangers which is the sense of the last phrase in Judges 12:3; come life, come death, I will not fear; I am determined to speak out my mind let what will be the consequence; and with this bold and heroic spirit agrees what follows.
(l) "Super quocunque eventu", Schultens.

A proverb for, "Why should I anxiously desire to save my life?" [EICHORN]. The image in the first clause is that of a wild beast, which in order to preserve his prey, carries it in his teeth. That in the second refers to men who hold in the hand what they want to keep secure.

Wherefore should he carry away his flesh in his teeth, i.e., be intent upon the maintenance of his life, as a wild beast upon the preservation of its prey, by holding it between its teeth (mordicus tenet) and carrying it away? This is a proverbial phrase which does not occur elsewhere; for Jeremiah 38:2 (thy life shall become as spoil, לשׁלל, to thee) is only similar in outward appearance. It may be asked whether Job 13:14 continues the question begun with על־מה (vid., on Isaiah 1:5): and wherefore should I take my soul in my hands, i.e., carefully protect it as a valuable possession? (Eichh., Umbr., Vaih.). But apart from Psalm 119:109 (my soul is continually in my hand), - where it may be asked, whether the soul is not there regarded as treasure (according to the current religious phrase: to carry his soul in his hand = to work out the blessedness of his soul with fear and trembling), - בכפּיו נפשׁו שׂים signifies everywhere else (Judges 12:3; 1-Samuel 19:5; 1-Samuel 28:21) as much as to risk one's life without fear of death, properly speaking: to fight one's way through with one's fist, perishing so soon as the strength of one's fist is gone (Ewald); comp. the expression for the impending danger of death, Deuteronomy 28:66. If this sense, which is in accordance with the usage of the language, be adopted, it is unnecessary with Hirz., after Ewald, 352, b, to take ונפשׁי for נפשׁי גם: also, even my soul, etc., although it cannot be denied that ו, like καὶ and et, sometimes signifies: also, etiam (Isaiah 32:7; 2-Chronicles 27:5; Ecclesiastes 5:6, and according to the accents, Hosea 8:6 also; on the contrary, 2-Samuel 1:23; Psalm 31:12, can at least by explained by the copulative meaning, and Amos 4:10 by "and indeed"). The waw joins the positive to the negative assertion contained in the question of Job 13:14 (Hahn): I will not eagerly make my flesh safe, and will take my soul in my hand, i.e., calmly and bravely expose myself to the danger of death. Thus Job 13:15 is most directly connected with what precedes.

Wherefore - And this may be a reason of his desire of liberty of speech, because he could hold his tongue no longer, but must needs tear himself to pieces, if he had not some vent for his grief. The phrase having his life in his hand, denotes a condition extremely dangerous.