Or HaChaim on Deuteronomy 32:35/אור החיים על דברים ל״ב:ל״ה

1 לי נקם ושלם, "Mine is the vengeance and the retribution." As mentioned previously and in Avodah Zarah 3, when that day arrives G'd will remove the sun from its orbit and the wicked will be burned by it whereas the righteous will experience the sun's heat as therapy and be healed by it. The sequence of the words לי נקם ושלם, means that at one and the same time what will be G'd's vengeance against the wicked will be the payment of a reward for the righteous.

2לעת תמוט רגלם, "at the time when their foot will falter." This is the mystical dimension of Sotah 49 of the period known as עקבות משיחא. It is a period when the feet of Samael will begin to totter as the wicked will falter. [actually that folio in Sotah only describes the breakdown of social mores during the period preceding the arrival of the Messiah. Ed.]

3כי קרוב יום אידם, "for the day of their disaster is near." This is the day referred to by the prophet as "the day of the Lord" (Tzefaniah 1,6).

4והש עתידות למו, "and the future will rush towards them." These are the words of comfort which will all be fulfilled once the wicked get their just deserts. At that time G'd will hasten to keep His promises to the righteous.