19 Uzziyahu, holding the censer and ready to burn incense, got angry; but as he got angry with the Kohanim, leprosy broke out on his forehead in front of the Kohanim in the House of Hashem beside the incense mizbayach.
va-yiz-AF u-zi-YA-hu uv-ya-DO mik-TE-ret l’-hak-TEER uv-za-PO im ha-ko-ha-NEEM v’-ha-tza-RA-at za-r’-KHA v’-mitz-KHO lif-NAY ha-ko-ha-NEEM b’-VAYT a-do-NAI may-AL l’-miz-BAKH ha-k’-TO-ret
יט וַיִּזְעַף עֻזִּיָּהוּ וּבְיָדוֹ מִקְטֶרֶת לְהַקְטִיר וּבְזַעְפּוֹ עִם־הַכֹּהֲנִים וְהַצָּרַעַת זָרְחָה בְמִצְחוֹ לִפְנֵי הַכֹּהֲנִים בְּבֵית יְהֹוָה מֵעַל לְמִזְבַּח הַקְּטֹרֶת׃
26:19 Leprosy broke out on his forehead
Emboldened by his success, Uzziyahu is not satisfied with being just a king; he wishes to be a Kohen as well. Since he is not a descendant of the house of Levi, he is barred from priesthood and his attempt to offer a sacrifice of incense defiles the Beit Hamikdash. Therefore, he contracts a form of ritual impurity even while attempting to bring a sacrifice in the Temple, a place in which ritual impurity is usually barred. Rashi (Isaiah 6:4) writes that this action causes the earthquake that shook the Land of Israel in the days of Uzziyahu (see Amos 1:1 and Zechariah 14:5). This shows the spiritual sensitivity of Eretz Yisrael. Not only is Uzziyahu punished, but the land itself reacts to the violation of God’s command.