Isaiah 41:8-16

Verse 9

And called thee from the chief men thereof "And called from the extremities thereof" - אציל מאציליה atsil meatsileyha, signifies the arm, ascilla, ala; and is used like כנף canaph, "the wing, "for any thing extended from the extremity of another, or joined on to it. It is here parallel with and synonymous to מקצות mikkatsoth, "from the ends, "in the preceding member.
Verse 10

Be not dismayed - ואל תשתע veal tishta, "And be not dismayed. "The ו vau is added by twenty-one of Dr. Kennicott's MSS., thirty of De Rossi's, and one of my own, and three editions. It makes the sense more complete.
Verse 14

Fear not, thou worm Jacob - In the rabbinical commentary on the five books of Moses, Yelamedenu, it is asked, Why are the Israelites called a worm? To signify, that as the worm does not smite, that is, gnaw the cedars, but with its mouth, which is very tender, yet it nevertheless destroys the hard wood; so all the strength of the Israelites is in prayer, by which they smite the wicked of this world, though strong like the cedars, to which they are compared, Eze 31:3.
Verse 15

A new sharp threshing instrument having teeth "A threshing wain; a new corn-drag armed with pointed teeth" - See note on Isa 28:27-28.

Thou shalt thresh the mountains - Mountains and hills are here used metaphorically for the kings and princes of the Gentiles. - Kimchi.
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