OET interlinear ISA 48:21

uW Translation Notes:

Note 1 topic: writing-pronouns

וְ⁠לֹ֣א צָמְא֗וּ

and=not thirst

The pronoun they refers to the people of Israel, whom Yahweh redeemed. It may be helpful to clarify this for your readers. Alternate translation: [The people of Israel did not thirst]

Note 2 topic: grammar-connect-time-background

בָּ⁠חֳרָבוֹת֙ הֽוֹלִיכָ֔⁠ם

in,the_waste_places he,led_them

Isaiah is using the clause he led them in desolations to describe something that was ongoing. This provides the background for other events he will describe that began to happen during this time. Connect this clause to the story in a way that makes it clear in your language that this clause is describing something that was ongoing in the background. Alternate translation: [While he was leading them through desolations]

Note 3 topic: grammar-connect-time-simultaneous

וְ⁠לֹ֣א צָמְא֗וּ בָּ⁠חֳרָבוֹת֙ הֽוֹלִיכָ֔⁠ם

and=not thirst (Some words not found in UHB: and=not thirst in,the_waste_places he,led_them waters from,a_rock flow for,them and,he_split_open rock and,they_flowed_out water )

The words that the ULT translates as And and when indicate that they did not thirst at the same time as when Yahweh led them in desolations. If it would be helpful to your readers, you could describe the time relationship more explicitly. Alternate translation: [While he led them in desolations, they did not thirst]

Note 4 topic: figures-of-speech / explicit

מַ֥יִם מִ⁠צּ֖וּר הִזִּ֣יל לָ֑⁠מוֹ

waters from,a_rock flow for,them

The implication is that this refers to the time when Yahweh brought the people of Israel out of Egypt and provided water for them from a rock as they traveled through the wilderness. You could include this information if that would be helpful to your readers. Alternate translation: [Just as he did when he brought Israel out of Egypt, he made waters flow from the rock for them]