בֶּן־אָדָ֕ם שִׂ֣ים פָּנֶ֔יךָ עַל־פַּרְעֹ֖ה מֶ֣לֶךְ מִצְרָ֑יִם וְהִנָּבֵ֣א עָלָ֔יו וְעַל־מִצְרַ֖יִם כֻּלָּֽהּ׃
מענטשנקינד, טו דײַן פּנים צו פּרעה דעם מלך פֿון מצרַיִם, און זאָג נבֿיאות אױף אים, און אױף מצרַיִם אין גאַנצן;
Rashi
all who seek her will not weary For they will weary needlessly, for they will be unable to overtake her. What will her end be? In her month, they will find her. There is one month in the year that she sleeps for the whole month, and then she is captured. You, too, - one month (viz. Ab) was already prepared for you from the days of the spies, when your forefathers established it as a time of vain weeping, therein, you will be captured. (תּאניה ואניה) (Lam. 2:5). Another explanation: (sa contree in French,) her country, comp. Taanath Shiloh (Josh. 16:6).
Rashi
Egypt etc. These were the neighbors of Eretz Israel, and they were punished shortly after her, as it is written in Ezekiel (29), and explained in Seder Olam (ch. 26).