וַיִּשְׁמַ֡ע עֶֽבֶד־מֶ֨לֶךְ הַכּוּשִׁ֜י אִ֣ישׁ סָרִ֗יס וְהוּא֙ בְּבֵ֣ית הַמֶּ֔לֶךְ כִּֽי־נָתְנ֥וּ אֶֽת־יִרְמְיָ֖הוּ אֶל־הַבּ֑וֹר וְהַמֶּ֥לֶךְ יוֹשֵׁ֖ב בְּשַׁ֥עַר בִּנְיָמִֽן׃
왕궁 환관 구스인 에벳멜렉이 그들의 예레미야를 구덩이에 던져넣었음을 들으니라 때에 왕이 베냐민 문에 앉았더니
Rashi
the Cushite Zedekiah. Just as a Cushite is different in his skin, so was Zedekiah different in his righteousness, from all his generation (Moed Katan 16b). And there is a Midrash that expounds “the Cushite,” as referring to Baruch (Sifrei ibid.).