OET interlinear HERO (JDG) 6:33

uW Translation Notes:

Note 1 topic: writing-newevent

וְ⁠כָל־מִדְיָ֧ן וַ⁠עֲמָלֵ֛ק וּ⁠בְנֵי־קֶ֖דֶם נֶאֶסְפ֣וּ יַחְדָּ֑ו

and=all Midyānites and,Amalek and=the_sons east gathered (Some words not found in UHB: and=all Midyānites and,Amalek and=the_sons east gathered together and,they_passed_over and,they_encamped in,the_valley_of Yizrəˊ^ʼēl/(Jezreel) )

The author is introducing a new event in the story. The ULT indicates this with the word Now. Use a word, phrase, or other method in your language that is natural for introducing a new event.

Note 2 topic: figures-of-speech / idiom

וּ⁠בְנֵי־קֶ֖דֶם

and=the_sons east

See how you translated this expression in 6:3.

Note 3 topic: figures-of-speech / explicit

וַ⁠יַּעַבְר֥וּ

(Some words not found in UHB: and=all Midyānites and,Amalek and=the_sons east gathered together and,they_passed_over and,they_encamped in,the_valley_of Yizrəˊ^ʼēl/(Jezreel) )

The author assumes that readers will understand that he means that these enemy forces crossed over the Jordan River into Israel. You could indicate this explicitly in your translation if that would be helpful to your readers. Alternate translation: [and they crossed over the Jordan River into Israel]