וַיִּשְׁלַח֩ הָאֱלֹהִ֨ים ׀ מַלְאָ֥ךְ ׀ לִֽירוּשָׁלִַם֮ לְהַשְׁחִיתָהּ֒ וּכְהַשְׁחִ֗ית רָאָ֤ה יְהוָה֙ וַיִּנָּ֣חֶם עַל־הָֽרָעָ֔ה וַיֹּ֨אמֶר לַמַּלְאָ֤ךְ הַמַּשְׁחִית֙ רַ֔ב עַתָּ֖ה הֶ֣רֶף יָדֶ֑ךָ וּמַלְאַ֤ךְ יְהוָה֙ עֹמֵ֔ד עִם־גֹּ֖רֶן אָרְנָ֥ן הַיְבוּסִֽי׃ (ס)
E Dio mandò un angelo a Gerusalemme per distruggerla; e mentre la distruggeva, il Signore guardò e si pentì del male, e disse all'angelo distruttore: «Basta! Ora ritira la tua mano». E l'angelo del Signore stava presso l'aia di Ornan il Gebuseo.
Rashi
on Mount Moriah because the Holy One, blessed be He, appeared to David in the threshing floor of Ornan when the plague stopped, and that is Mount Moriah, David’s place.
Rabbeinu Bahya
וירף ממנו, “so he released him;” the angel released. We also find the word הרף applied to an angel in Chronicles I 21,15 ויאמר למלאך המשחית רב עתה הרף ידך, “He said to the angel of destruction: Enough!, now release your hand!” This occurred after Tziporah had removed her son’s foreskin.