Isaiah 41:17-20

Verse 19

I will plant in the wilderness the cedar - The two preceding verses express God's mercy to them in their passage through the dry deserts, in supplying them with abundant water, when distressed with thirst, in allusion to the exodus. This verse expresses the relief afforded to them, fainting with heat in their journey through that hot country, destitute of shelter, by causing shady trees, and those of the tallest and most beautiful kinds, to spring up for their defense. The apocryphal Baruch, speaking of the return from Babylon, expresses God's protection of his people by the same image: "Even the woods and every sweet-smelling tree shall overshadow Israel by the commandment of God." 5:8.

The oil tree - This, Kimchi says, is not to be understood of the olive tree, for the olive is distinguished, Neh 8:15; but it means the pine or fir, from which pitch is extracted.
Verse 20

And consider - The verb ישימו yasimu, without לב leb added, cannot signify to apply the heart, or to attend to a thing, as Houbigant has observed; he therefore reads ישמו yashshemu, they shall wonder. The conjecture is ingenious; but it is much more probable that the word לב leb is lost out of the text; for all the ancient versions render the phrase to the same sense, as if it were fully expressed, ישימו לב yasimu leb; and the Chaldee renders it paraphrastically, yet still retaining the very words in his paraphrase, ושוון דחלתי על לבהון vishavvun dechalti al lebehon, "that they may put my fear in their heart." See also Isa 41:22, where the same phrase is used.
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