Struck with the rod of his mouth
He said harsh things with his lips. He insulted and attacked with his words.
("And he shall judge the poor with righteousness, and shall reprove with equity for the meek of the earth, and shall smite the earth with the rod of his mouth, and with the breath of his lips in the day of evil" - Isaiah 4:14, and so: "Just as a man whose wisdom prevents him from passing his portion over the bullocks, he passes the portion over the children of men with his tongue" - H. Be'er/ Notzot, 141)
Translation
Expression (Hebrew)
הִכָּה בְּשֵׁבֶט פִּיו
Definition (Hebrew)
אָמַר דְּבָרִים קָשִׁים כְּלַפָּיו. הֶעֱלִיב וְתָקַף בִּדְבָרָיו.
("וְשָׁפַט בְּצֶדֶק דַּלִּים וְהוֹכִיחַ בְּמִישׁוֹר לְעַנְוֵי אָרֶץ וְהִכָּה אֶרֶץ בְּשֵׁבֶט פִּיו וּבְרוּחַ שְׂפָתָיו יָמִית רָשָׁע"- יְשַׁעְיָהוּ יָא ד, וְכֵן:"רַק מִשּׁוּם שֶׁשִּׂכְלוֹ מוֹנֵעַ אוֹתוֹ מִלְּהַעֲבִיר אֶת חָלְפוּ עַל צַוַּאר הַפָּרוֹת הוּא מַעֲבִיר אֶת שֵׁבֶט לְשׁוֹנוֹ עַל בְּנֵי אָדָם"-ח.בְּאֵר/ נוֹצוֹת, 141)