הַהֹלְכִים֙ לָרֶ֣דֶת מִצְרַ֔יִם וּפִ֖י לֹ֣א שָׁאָ֑לוּ לָעוֹז֙ בְּמָע֣וֹז פַּרְעֹ֔ה וְלַחְס֖וֹת בְּצֵ֥ל מִצְרָֽיִם׃
Rashi on Isaiah
Those who go to descend to Egypt This alludes to Hoshea, son of Elah, who sent emissaries to So, king of Egypt (II Kings 17:4).
Ibn Ezra on Isaiah
That walk to go down, etc. This verse explains the preceding.
Rashi on Isaiah
to descend to Egypt The land of Israel is higher than all the other lands. Alternatively, this is a degradation for them.