OET interlinear PRO 21:18

uW Translation Notes:

Note 1 topic: figures-of-speech / metaphor

כֹּ֣פֶר לַ⁠צַּדִּ֣יק רָשָׁ֑ע

ransom for_the,righteous wicked

Here Solomon refers to a wicked one who is punished instead of the righteous one as if a wicked one were a ransom that is paid on behalf of the righteous one. If it would be helpful in your language, you could express the meaning plainly. Alternate translation: “A wicked one is punished instead of a righteous one”

Note 2 topic: figures-of-speech / genericnoun

לַ⁠צַּדִּ֣יק רָשָׁ֑ע

for_the,righteous wicked

See how you translated the righteous one in [10:3](../10/03.md) and a wicked one in [9:7](../09/07.md).

Note 3 topic: figures-of-speech / ellipsis

וְ⁠תַ֖חַת יְשָׁרִ֣ים בּוֹגֵֽד

and,for upright faithless

Solomon is leaving out some of the words that in many languages a sentence would need in order to be complete. You could supply these words from earlier in the sentence if it would be clearer in your language. Alternate translation: “and instead of upright ones, one who acts treacherously is a ransom” or “and instead of upright ones, one who acts treacherously is punished”

Note 4 topic: figures-of-speech / genericnoun

בּוֹגֵֽד

faithless

Here, one who acts treacherously represents this type of people in general, not one particular person. If it would be helpful in your language, you could use a more natural expression. Alternate translation: “any person who acts treacherously”