עַל־כֵּ֣ן לֹא־נִ֭ירָא בְּהָמִ֣יר אָ֑רֶץ וּבְמ֥וֹט הָ֝רִ֗ים בְּלֵ֣ב יַמִּֽים׃
דרום װעלן מיר ניט מורא האָבן, װען די ערד זאָל זיך בײַטן, און װען די בערג זאָלן אומפֿאַלןאין האַרצן פֿון ים.
Rashi
when the earth changes in the future, on the day concerning which Scripture states (Isa. 51: 6): “and the earth shall rot away like a garment.” The sons of Korah saw the miracle that was performed for them, that all those around them were swallowed up while they [the sons of Korah] stood in the air and said to Israel, through the holy spirit, that a similar miracle would be performed for them in the future.