וְזֹ֣את ׀ תִּֽהְיֶ֣ה הַמַּגֵּפָ֗ה אֲשֶׁ֨ר יִגֹּ֤ף יְהוָה֙ אֶת־כָּל־הָ֣עַמִּ֔ים אֲשֶׁ֥ר צָבְא֖וּ עַל־יְרוּשָׁלִָ֑ם הָמֵ֣ק ׀ בְּשָׂר֗וֹ וְהוּא֙ עֹמֵ֣ד עַל־רַגְלָ֔יו וְעֵינָיו֙ תִּמַּ֣קְנָה בְחֹֽרֵיהֶ֔ן וּלְשׁוֹנ֖וֹ תִּמַּ֥ק בְּפִיהֶֽם׃
И это будет чумой, из-за которой Господь поразит все народы, воевавшие против Иерусалима: плоть их истребится, когда они встанут на ноги, и глаза их истребят в сокетах их, и язык их истребит в их рот.
Rashi
his flesh will waste away while he still stands This denotes the falling off of the limbs.
Tze'enah Ure'enah
“There will be a plague with which the Lord will smite, etc.” [14:12]. The Holy One will smite the nations that waged war against Jerusalem. Their limbs will fall off while they are still alive and standing on their feet. Their eyes will drain out and a hole will be left in their heads where their eyes were. Their tongues will dissolve in their mouths.