וּבְבֹאָ֑הּ הִנֵּ֣ה בָאָ֔ה וְיָ֣דְע֔וּ כִּ֥י נָבִ֖יא הָיָ֥ה בְתוֹכָֽם׃ (ס)
這事臨到的時候——看哪，它必臨到——他們就知道在他們中間有了一位先知。
Rashi
behold it is coming for, indeed, it is ready to come; then they will know that your words were not a jest, but that a true prophet was in their midst.