וירף. הַמַּלְאָךְ ממנו, אז הֵבִינָה שֶׁעַל הַמִּילָה בָּא לְהָרְגוֹ: וירף SO HE LOOSENED HIS HOLD — the angel loosened his hold ממנו FROM HIM; (cf. Exodus Rabbah 5:8). אז THEN she understood that he had come to kill him because of the delay in the circumcision,
אמרה חתן דמים למולת. חֲתָנִי הָיָה נִרְצָח עַל דְּבַר הַמִּילָה: אמרה חתן דמים למלות SHE SAID “BRIDEGROOM OF BLOOD BECAUSE OF THE CIRCUMCISION” — my bridegroom was on the point of being killed on account of the circumcision.
למולת. עַל דְּבַר הַמּוּלוֹת. שֵׁם דָּבָר הוּא, וְהַלָּמֶ"ד מְשַׁמֶּשֶׁת בִּלְשׁוֹן עַל, כְּמוֹ "וְאָמַר פַּרְעֹה לִבְנֵי יִשְׂרָאֵל" (שמות י"ד), וְאֻנְקְלוֹס תִּרְגֵּם דָּמִים עַל דַּם הַמִּילָה: למלות means on account of (ל) the circumcision (מולות). The word מולות it a noun, and the ל prefixed it used in the tense of על, “on account of”, just as in (Exodus 14:3) “And Pharaoh will say regarding the children (לבני) of Israel”. Onkelos, however, translated the word דמים as having reference to the blood of the circumcision (whilst, according to Rashi, it refers to the blood of Moses which was about to be shed).