In famine he shall redeem thee - That is, will deliver thee from death. On the meaning of the word "redeem," see the notes at Isaiah 43:1, Isaiah 43:3.
From the power of the sword - Margin, as in Hebrew "hands." That is, he should not be slain by armed men. A mouth is often attributed to the sword in the Scriptures, because it devours; "hands" are attributed to it here, because it is by the hand that we perform an undertaking, and the sword is personified, and represented as acting as a conscious agent; compare Ezekiel 35:5, margin. The meaning is that God would protect those who put their trust in him, in times of calamity and war. Doubtless Eliphaz had seen instances enough of this kind to lead him to this general conclusion, where the pious poor had been protected in a remarkable manner, and where signal deliverances had been vouchsafed to the righteous in danger.

In famine he shall redeem thee - The Chaldee, which understands this chapter as speaking of the troubles and deliverances of the Israelites in Egypt and the wilderness, renders this verse as follows:
"In the famine of Egypt he redeemed thee from death; and in the war of Amalek, from the slaying of the sword."

In famine he shall redeem thee from death,.... In a time of extreme want of provisions, God so cares for his own dear people, that they shall not be starved to death by the famine; so in the famine in Egypt, which the Targum takes notice of, in the times of Abraham, and of Isaac, and of Jacob, and the patriarchs, there was food provided for them, so that they and their families were sustained, and perished not for lack of the necessaries of life: God sometimes goes out of his ordinary way, and works wonders for his poor and needy in distress, when they cry unto him; see Isaiah 41:17,
and in war from the power of the sword; or, "from the hands of the sword" (f): from swords in hand, when drawn, and men are ready to push with them with all their force; as he delivered and preserved Abraham from the sword of the four kings, when he waged war with them, Genesis 14:20; and the Israelites, in the war of Amalek, in the times of Moses, Exodus 17:8, which the Targum here refers to; and David from the harmful sword of Goliath, 1-Samuel 17:46, and others with whom he was concerned in war: and so the Lord covers the heads of his people in the day of battle oftentimes, when multitudes fall on their right hand and on their left.
(f) "de manu gladii", V. L. "e manibus gladii", Pagninus & Montanus, &c.

power-- (Jeremiah 5:12). Hebrew, "hands."
of the sword-- (Ezekiel 35:5, Margin). Hands are given to the sword personified as a living agent.

He shall - These things he utters with more confidence, because the rewards or punishments of this life, were more constantly distributed to men in the Old Testament according to their good or bad behaviour, than they are now: and because it was his opinion, that great afflictions were the certain evidences of wickedness; and consequently, that great deliverances would infallibly follow upon true repentance.