Jewish Philosophy on Haggai 2:21: Rambam & Classical Sources

אֱמֹ֕ר אֶל־זְרֻבָּבֶ֥ל פַּֽחַת־יְהוּדָ֖ה לֵאמֹ֑ר אֲנִ֣י מַרְעִ֔ישׁ אֶת־הַשָּׁמַ֖יִם וְאֶת־הָאָֽרֶץ׃

’Speak to Zerubbabel, governor of Judah, saying: I will shake the heavens and the earth;