פירוש על מלכים א 12:27

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.