אִֽם־יַעֲלֶ֣ה ׀ הָעָ֣ם הַזֶּ֗ה לַעֲשׂ֨וֹת זְבָחִ֤ים בְּבֵית־יְהוָה֙ בִּיר֣וּשָׁלִַ֔ם וְ֠שָׁב לֵ֣ב הָעָ֤ם הַזֶּה֙ אֶל־אֲדֹ֣נֵיהֶ֔ם אֶל־רְחַבְעָ֖ם מֶ֣לֶךְ יְהוּדָ֑ה וַהֲרָגֻ֕נִי וְשָׁ֖בוּ אֶל־רְחַבְעָ֥ם מֶֽלֶךְ־יְהוּדָֽה׃
Denn wenn dieses Volk ziehen wird, Opfer zu verrichten im Hause des Herrn in Jerusalem, so wird das Herz des Volkes sich wieder seinem [rechtmäßigen] Herrn zuwenden, dem Rehabeam, König von Jehuda. Sie werden mich ermorden und zurückkehren zu Rehabeam, König von Jehuda.
Rashi
If this people will go up, etc. Sitting in the Temple court is not permitted only for kings of the house of Dovid, therefore, he will be sitting and I will be standing. Moreover, [during Succos] following the Sabbatical Year, at the time of the Assembly, he [is the one who] will read the section [in Devarim] relating to the king,4See Mishnayos Sotah 7:8. for he is the king of his province, whereas I will be [standing] like the rest of the people, and I will, therefore, be degraded.5Maseches Sanhedrin 101b.