OET interlinear PSA 121:4

uW Translation Notes:

Note 1 topic: figures-of-speech / metaphor

הִנֵּ֣ה

(Some words not found in UHB: see/lo/see! not slumber and=not sleep keeps_of Yisrael )

The psalmist is using the term Behold to focus his listeners’ attention on what he is about to say. Your language may have a comparable expression that you can use in your translation. Alternate translation: [Pay attention]

Note 2 topic: figures-of-speech / parallelism

לֹֽא־יָ֭נוּם וְ⁠לֹ֣א יִישָׁ֑ן

not slumber and=not (Some words not found in UHB: see/lo/see! not slumber and=not sleep keeps_of Yisrael )

These two phrases mean basically the same thing. The second emphasizes the meaning of the first by repeating the same idea with different words. If it would be helpful to your readers, you could combine them and express the emphasis in another way. Another approach would be to connect the phrases with a word that shows that the second phrase is repeating the first one, not saying something additional. See how you as a team have decided to translate the parallel phrases in the Psalms, and follow that approach here and throughout this psalm. Alternate translation: [he will not slumber, indeed, he will not sleep]

Note 3 topic: figures-of-speech / possession

שׁ֝וֹמֵ֗ר יִשְׂרָאֵֽל

keeps_of (Some words not found in UHB: see/lo/see! not slumber and=not sleep keeps_of Yisrael )

The psalmist is using this possessive form to mean the one who keeps Israel safe. It may be helpful to clarify this for your readers. Alternate translation: [the one who keeps Israel]