וְל֤וֹא הָֽיְתָה֙ סְדֹ֣ם אֲחוֹתֵ֔ךְ לִשְׁמוּעָ֖ה בְּפִ֑יךְ בְּי֖וֹם גְּאוֹנָֽיִךְ׃
Est-ce que le nom de Sodome, ta sœur, ne devait pas être une leçon dans ta bouche, au jour de ton orgueil,
Rashi
Now, was not Sodom your sister, etc. This is a [rhetorical] question.
Rashi
a report in your mouth [by which] to reprove many and to say, Beware that you should not be overturned like Sodom, as though it were recent news to you.
Rashi
on the day of your pride When you were in your greatness.