OET interlinear HERO (JDG) 5:22

uW Translation Notes:

Note 1 topic: writing-pronouns

אָ֥ז הָלְמ֖וּ עִקְּבֵי־ס֑וּס מִֽ⁠דַּהֲר֖וֹת דַּהֲר֥וֹת אַבִּירָֽי⁠ו

then beat (Some words not found in UHB: then beat hoofs_of horses' from_[the],galloping galloping_of of,his_mighty_[horses] )

The pronoun his refers to Sisera. This is a description of the sound of Sisera’s horses fleeing from the battle. It may be helpful to clarify this for your readers. Alternate translation: [Then there was the sound of horses’ hooves beating, as Sisera’s mighty steeds galloped away from the battlefield]

Note 2 topic: grammar-collectivenouns

הָלְמ֖וּ עִקְּבֵי־ס֑וּס

beat (Some words not found in UHB: then beat hoofs_of horses' from_[the],galloping galloping_of of,his_mighty_[horses] )

Since the song is referring to all of Sisera’s horses, it might be more natural in your language to use the plural form of horse. Alternate translation: [the hooves of horses beat]

Note 3 topic: figures-of-speech / reduplication

מִֽ⁠דַּהֲר֖וֹת דַּהֲר֥וֹת אַבִּירָֽי⁠ו

(Some words not found in UHB: then beat hoofs_of horses' from_[the],galloping galloping_of of,his_mighty_[horses] )

The author is repeating the verb galloping in order to intensify the idea that it expresses and perhaps to imitate the repetitive sound of horses’ hooves beating against the ground. If your language can repeat words for intensification and poetic effect, it would be appropriate to do that here in your translation. If not, your language may have another way of expressing the emphasis. Alternate translation: [as Sisera’s mighty steeds galloped wildly away]

Note 4 topic: figures-of-speech / nominaladj

אַבִּירָֽי⁠ו

(Some words not found in UHB: then beat hoofs_of horses' from_[the],galloping galloping_of of,his_mighty_[horses] )

The song is using the adjective mighty as a noun to mean a horse that has the characteristic of being mighty. Your language may use adjectives in the same way. If not, you can translate this adjective with an equivalent phrase. Alternate translation: [his mighty steeds]