A short Torah teaching: This week’s Torah reading is from Tzav, the second parashah of Leviticus. The word Tzav in the Bible means command. It is the root of the word mitzvah. In Yiddish, mitzvah (and I hear myself saying the word with a Yiddish accent) conveys “a good deed.” And yet, when we do an act of goodness as a duty, we are more prone to repeat that act than…