Rabbeinu Bachya ben Asher z”l (Zaragoza, Spain; 1255-1340) opens his commentary on this week’s parashah with a verse from Mishlei (21:15), “Performance of justice is a joy to the righteous.”
He writes: King Shlomo informs us in this verse that a person is obligated to feel joy when he sees a mitzvah being performed, not only when he is the one performing it, but also when someone else is. This is indicated by the fact that the verse says, “Performance of justice is a joy,” not, “Performing justice . . .”
It is known, Rabbeinu Bachya adds, that the joy one experiences when performing a mitzvah is itself a mitzvah. Just as performing a mitzvah is a form of serving Hashem, so the joy one experiences because of mitzvot is a form of serving Hashem. Rabbeinu Bachya continues:
We read (Devarim 28:47) that the curses in Parashat Ki Tavo will come to pass “because you did not serve Hashem, your Elokim, with joy and goodness of heart.” We also are commanded (Tehilim 100:2), “Serve Hashem with joy.” Joy makes our service complete. This is why the Temple service was accompanied by music–both vocal and instrumental– for music puts man’s soul on the path to joy.
In our parashah (4:47), the Levi’im are commanded to perform “the service of service.” The Gemara (Arachin 11a) explains: “What service serves the Temple service? The musical accompaniment!” The Levi’im are commanded to sing so that the mitzvah of the sacrificial service will be performed joyously.
Reprinted from this week’s email of R’ Yedidye Hirtenfeld’s whY I Matter parsha sheet.