Some commentaries explain that “act” (מַעֲשֵׂה) and “service” (עֲבוֹדָה) are one and the same; the verse merely reiterates the same theme in different words. Targum Yonatan, however, writes that “act” and “service” indicate two different forms of charity: the reward for the “act” of tzedakah is peace; the reward for the “service” of tzedakah is eternal quietness and surety.