30 Heb “until a spirit is emptied out on us from on high.” The words “this desolation will continue” are supplied in the translation for clarification and stylistic purposes. The verb עָרָה (’arah), used here in the Niphal, normally means “lay bare, expose.” The term רוּחַ (ruakh, “spirit”) is often understood here as a reference to the divine spirit (cf. 44:3 and , , , ), but it appears here without an article (cf. “a spirit”), pronominal suffix, or a genitive (such as “of the Lord”). The translation assumes that it carries an impersonal nuance “vivacity, vigor” in this context.
31 The same statement appears in 29:17b, where, in conjunction with the preceding line, it appears to picture a reversal. Here it seems to depict supernatural growth. The desert will blossom into an orchard, and the trees of the orchard will multiply and grow tall, becoming a forest.
32 This new era of divine blessing will also include a moral/ethical transformation, as justice and fairness fill the land and replace the social injustice so prevalent in Isaiah’s time.

In other versions

until the Spirit is poured upon us from on high,

and the wilderness becomes a fruitful field,

and the fruitful field is deemed a forest.

Then justice will dwell in the wilderness,

and righteousness abide in the fruitful field.

till the Spirit is poured on us from on high,

and the desert becomes a fertile field,

and the fertile field seems like a forest.

The Lord’s justice will dwell in the desert,

his righteousness live in the fertile field.

until the Spirit from on high is poured out on us.

Then the desert will become an orchard,

and the orchard will seem like a forest.

Then justice will inhabit the wilderness,

and righteousness will dwell in the orchard.

until at last the Spirit is poured out

on us from heaven.

Then the wilderness will become a fertile field,

and the fertile field will yield bountiful crops.

Justice will rule in the wilderness

and righteousness in the fertile field.

Until a spirit is poured out on us from on high,

and the wilderness becomes a fruitful field,

and the fruitful field is reckoned as the forest.

Then justice will dwell in the wilderness,

and righteousness will live in the fruitful field.

Until the spirit be poured upon us from on high,

And the wilderness be a fruitful field,

And the fruitful field be counted for a forest.

Then judgment shall dwell in the wilderness,

And righteousness remain in the fruitful field.

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