כפר לעמך ישראל אשר פדית
The Midrash Tanchuma (Haazinu) quotes the Toras Kohanim concerning the above pasuk: Kapeir l’amcha Yisrael, “Atone for Your People Yisrael.” This applies to the living; asher padisa; “that You have redeemed,” refers to the departed. This teaches that the living redeem the deceased. Therefore, it is our custom to memorialize the memory of the departed on Yom Kippur by praying for them, setting aside tzedakah, charity, in their behalf. I might think that tzedakah has no effect once a person passes on from this world. Thus, we learn from asher padisa, through the medium of tzedakah. The Midrash continues describing…