כְּהִנְדֹּ֥ף עָשָׁ֗ן תִּ֫נְדֹּ֥ף כְּהִמֵּ֣ס דּ֭וֹנַג מִפְּנֵי־אֵ֑שׁ יֹאבְד֥וּ רְ֝שָׁעִ֗ים מִפְּנֵ֥י אֱלֹהִֽים׃
Jak się rozwiewa dym, rozwiałeś ich, jak topnieje wosk przed ogniem; nikną niegodziwi przed Panem.
Radak
המול, an infinitive in the passive conjugation נפעל, meaning that the subject about whom the Torah speaks, the Jewish nation, is "to have each male circumcised." The root of the verb is נמל, it is parallel to such roots as שקל, הנדף, עשן, (compare Psalms 68,3). According to my opinion the word הנדף in that erse is a noun, as I have explained in my book שער הדקדוק. In accordance with that theory the word המול is also a noun with an additional letter ה, such as we find it when fully spelled out as הנמול, "the circumcised one," parallel to הנדף, "the dispersed one." Alternatively, the root of the verb is מול as in Amos 4,12 הכון, from the root כון.