OET interlinear PSA 89:29

uW Translation Notes:

Note 1 topic: figures-of-speech / metaphor

וְ⁠שַׂמְתִּ֣י לָ⁠עַ֣ד זַרְע֑⁠וֹ

(Some words not found in UHB: forever,perpetuity keep to=him/it loyalty_of,my_covenant and,covenant_of,my stand_firm to=him/it )

Here God is speaking of David’s descendants as if they were seed. If it would be helpful in your language, you could state the meaning plainly. Alternate translation: [I will establish his descendants forever]

Note 2 topic: figures-of-speech / simile

וְ֝⁠כִסְא֗⁠וֹ כִּ⁠ימֵ֥י שָׁמָֽיִם

(Some words not found in UHB: forever,perpetuity keep to=him/it loyalty_of,my_covenant and,covenant_of,my stand_firm to=him/it )

The point of this comparison is that just as the days of the heavens endure without end, so will his throne endure. If it would be helpful in your language, you could make this point explicitly. Alternate translation: [and his throne will last as long as the heavens endure]

Note 3 topic: figures-of-speech / metonymy

וְ֝⁠כִסְא֗⁠וֹ

(Some words not found in UHB: forever,perpetuity keep to=him/it loyalty_of,my_covenant and,covenant_of,my stand_firm to=him/it )

Here, throne represents royal authority and the right to rule. If it would be helpful in your language, you could use an equivalent expression or plain language. Alternate translation: [and his royal authority]