כא בַּיָּמִים הָהֵם וּמָרְדֳּכַי ישֵׁב בְּשַׁעַר–הַמֶּלֶךְ קָצַף בִּגְתָ֨ן וָתֶ֜רֶשׁ שְׁנֵי–סָרִיסֵי הַמֶּלֶךְ מִשֹּׁמְרֵי הַסַּף וַיְבַקְשׁוּ לִשְׁלֹחַ יָד בַּמֶּלֶךְ אֲחַשְׁוֵרשׁ
21. In those days – and Mordechai was sitting at the king’s gate – Bigsan and Seresh became angry with the king, two eunuchs of the king guarding his doorstep, and they sought/ requested to send out the hand to the king Achashverosh.
Rabbi Dovid Feinstein writes that the phrase “in those days” is meant to emphasize that H-Shem set up the saving of the Jews long before the threat to Jewish existence. As we have said before, H-Shem always prepares the cure before the advent of the ailment (Talmud, Megillah 13b).