OET interlinear HERO (JDG) 5:18

uW Translation Notes:

Note 1 topic: grammar-collectivenouns

זְבֻל֗וּן עַ֣ם חֵרֵ֥ף נַפְשׁ֛⁠וֹ לָ⁠מ֖וּת

Zəⱱulun people risked life_of,its to,die

Since the song is referring to a group of people, it might be more natural in your language to use the plural form of soul. Alternate translation: [The people of Zebulun were reproaching their souls unto death]

Note 2 topic: figures-of-speech / metaphor

זְבֻל֗וּן עַ֣ם חֵרֵ֥ף נַפְשׁ֛⁠וֹ לָ⁠מ֖וּת

Zəⱱulun people risked life_of,its to,die

The song is speaking as if the people of the tribe of Zebulun had literally been reproaching their souls during the battle, that is, as if they had been taunting or shaming them for wanting to stay alive. If it would be clearer in your language, you could state the meaning plainly. Alternate translation: [The people of Zebulun told themselves not to be afraid to die]

Note 3 topic: figures-of-speech / ellipsis

וְ⁠נַפְתָּלִ֑י עַ֖ל מְרוֹמֵ֥י שָׂדֶֽה

(Some words not found in UHB: Zəⱱulun people risked life_of,its to,die and=Naftali on/upon/above/on_account_of//he/it_went_in heights_of field )

The song is leaving out some of the words that in many languages a sentence would need in order to be complete. You can supply these words from the context if that would be clearer in your language. Alternate translation: [and the people of Naphtali were also not afraid to die on the heights on the battlefield]