An interjection is an exclamation, added to a sentence for emphasis (e.g., o!, woe!)

βάθος πλούτου καὶ σοφίας καὶ γνώσεως θεοῦ (Rom 11:33) Ō **bathos ploutou kai sophias kai gnōseōs theou Oh depth of riches/wealth and wisdom and knowledge of God **Oh, the depth of the riches and wisdom and knowledge of God!

Example: EXO 32:31
אָ֣נָּ֗א חָטָ֞א הָעָ֤ם הַזֶּה֙ חֲטָאָ֣ה גְדֹלָ֔ה
‘onna hata ha’am hazzeh hata’ah gedolah
Oh it-has-sinned the-people the-this sin great
Oh, these people have committed a great sin