פירוש על במדבר 29:34

ושעיר חטאת אחד, “and one male goat;” the words: לכפר עליכם, “to atone on your behalf,” do not appear in connection with the ones offered on the other days of the festival, as they were offered on behalf of the gentile nations, whereas on the last day of the festival the mussaph offering was presented on behalf of the Jewish people. Their atonement, if any, had no connection with the atonement granted to the Jewish people. An alternate interpretation of this: the Israelites were not yet in need of any atonement having been forgiven their sins on the Day of Atonement four days before the commencement of the Sukkot festival, and having spent the last eight days busy with performing a large number of additional commandments. Proof of this is that we do not read about: “to atone on your behalf,” on any day after the Day of Atonement in this chapter.