Tonight begins the weeklong observance of Jewish Passover. With its accompanying ceremonial Seder dinner, generally taking place in the home, Passover commemorates the Israelites’ exodus from slavery in Egypt thousands of years ago. Perhaps the most significant holiday of the Jewish people, it’s noted for being a celebration during which the entire family — from the youngest child to the most foolish, the wisest and even to the most wicked — are called upon to “become part of every generation obligated to see one’s self …