וּמִבָּנֶ֜יךָ אֲשֶׁ֨ר יֵצְא֧וּ מִמְּךָ֛ אֲשֶׁ֥ר תּוֹלִ֖יד יקח [יִקָּ֑חוּ] וְהָיוּ֙ סָֽרִיסִ֔ים בְּהֵיכַ֖ל מֶ֥לֶךְ בָּבֶֽל׃
And of thy sons that shall issue from thee, whom thou shalt beget, shall they take away; and they shall be officers in the palace of the king of Babylon.’
Read midrashic interpretation of II Kings 20:18: and classical rabbinic exegesis.