28:12כ״ח:י״ב
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עולים וירדים. עוֹלִים תְּחִלָּה וְאַחַר כָּךְ יוֹרְדִים? מַלְאָכִים שֶׁלִּוּוּהוּ בָּאָרֶץ אֵין יוֹצְאִים חוּצָה לָאָרֶץ, וְעָלוּ לָרָקִיעַ וְיָרְדוּ מַלְאֲכֵי חוּצָה לָאָרֶץ לְלַוּוֹתוֹ:

עלים וירדים ASCENDING AND DESCENDING — It states first ascending and afterwards descending! Those angels who accompanied him in the land of Israel were not permitted to leave the Land: they ascended to Heaven and angels which were to minister outside the Land descended to accompany him (Genesis Rabbah 68:12).