Likutei Moharan, Part II 65/ליקוטי מוהר"ן·תנינא ס״ה

1When one avenges “the vengeance of the God of Hosts,” it is reckoned as charity.

2This is as the Tosafot wrote in Chapter HaShutafin, concerning that which our Sages, of blessed memory, taught (Bava Batra 10b) : {“Charity exalts a people, but the kindness of nations is a sin” (Proverbs 14:34).}

3“Charity exalts a people”—this refers to Israel—“but the kindness of nations is a sin”—this refers to idolaters, whose every kindness…. They brought proof from Nevuzaraddan; see there.

4And the Tosafot wrote there: Nevuzaraddan performed charity then by taking revenge on behalf of God. It follows, that “the vengeance of the God of Hosts” is akin to charity.