א וַיְהִי בִּימֵי אָחָז בֶּן יוֹתָם בֶּן עֻזִּיָּהוּ מֶלֶךְ יְהוּדָה עָלָה רְצִין מֶלֶךְ אֲרָם וּפֶקַח בֶּן רְמַלְיָהוּ מֶלֶךְ יִשְׂרָאֵל יְרוּשָׁלִַם לַמִּלְחָמָה עָלֶיהָ וְלֹא יָכֹל לְהִלָּחֵם עָלֶיהָ

It was in the days of Ahaz, son of Yotam, son of Uziyahu, king of Judah, by which time Isaiah had already been a prophet for years, since his career began during Uziyahu’s reign, that Retzin king of Aram, and Pekah son of Remalyahu, the last powerful king of Israel, went up to Jerusalem in war against it, but he could not conquer it. Pekah sought to overturn the Davidic dynasty in Judah and allied himself with Israel’s traditional enemy, Aram.

ב וַיֻּגַּד לְבֵית דָּוִד לֵאמֹר נָחָה אֲרָם עַל אֶפְרָיִם וַיָּנַע לְבָבוֹ וּלְבַב עַמּוֹ כְּנוֹעַ עֲצֵי יַעַר מִפְּנֵי רוּחַ

It was told to the house of David, the Judean royal family, saying: Aram has allied [naha] with Ephraim. This was an unusual and threatening turn of events, for even without the addition of the large Aramean army, the Kingdom of Israel, which was larger than the Kingdom of Judah in both size and population, could itself muster an army greater than Judah’s. Therefore, when the king of Judah heard this, his heart and his people’s heart trembled, like the trembling of the trees of the forest from the wind.