שָׁמַ֧ע מֶֽלֶךְ־בָּבֶ֛ל אֶת־שִׁמְעָ֖ם וְרָפ֣וּ יָדָ֑יו צָרָה֙ הֶחֱזִיקַ֔תְהוּ חִ֖יל כַּיּוֹלֵדָֽה׃
The king of Babylon hath heard the fame of them, And his hands wax feeble; Anguish hath taken hold of him, And pain, as of a woman in travail.
Read midrashic interpretation of Jeremiah 50:43: and classical rabbinic exegesis.