אָ֣ז יַעֲלֶ֣ה רְצִ֣ין מֶֽלֶךְ־אֲ֠רָם וּפֶ֨קַח בֶּן־רְמַלְיָ֧הוּ מֶֽלֶךְ־יִשְׂרָאֵ֛ל יְרוּשָׁלִַ֖ם לַמִּלְחָמָ֑ה וַיָּצֻ֙רוּ֙ עַל־אָחָ֔ז וְלֹ֥א יָכְל֖וּ לְהִלָּחֵֽם׃
Then Rezin king of Aram and Pekah son of Remaliah king of Israel came up to Jerusalem to war; and they besieged Ahaz, but could not overcome him.
Read midrashic interpretation of II Kings 16:5: and classical rabbinic exegesis.