“Why is this night different from all other nights?” Thus at sunset today will begin the ritual of questions during the Seder meal with which observant Jews start the celebration of Passover, or Pesach, which commemorates the deliverance of the Israelite slaves from bondage in Egypt.

According to tradition, as related in the book of Exodus, the Israelites were made slaves in ancient Egypt. But Yahweh, the Hebrew God, instructed Moses to demand of the ruling Pharaoh that His people be released. Pharaoh refused, and Yahweh brought 10 plagues down upon Egypt. The final plague was the death of the firstborn son in every household. The Jews were instructed to sacrifice a lamb or kid and smear its blood on the house’s lintel or doorpost. Seeing the blood, the Angel of Death would pass over that house. After this plague Pharaoh relented and allowed the Jews to leave.

Why do we eat only unleavened bread, or matzoh, on Pesach? To remember that, when the Jews left Egypt there was not time to allow the bread to rise, so the dough was baked into hard crackers. Why do we eat bitter herbs? To remind us of the cruelty the Jews suffered. Why do we dip our foods? We dip bitter herbs into Charoset made of apples and nuts, which resembles clay for bricks, to remind us how hard the slaves worked. Parsley is dipped into saltwater; the parsley symbolizes that Spring is here, and new life will grow. The saltwater reminds us of the tears of the Jewish slaves. Why do we lean on a pillow? To be comfortable and to remind us that once we were slaves, and now we are free.

Passover is typically celebrated for seven days in Israel and among Reform Jews, and for eight days among diaspora Conservative and Orthodox Jews. It recalls the birth of a Jewish nation, freed of Egyptian oppression and able to serve Yahweh, or God, alone.

Passover commemorates the birth of a Jewish nation consecrated to serve Yahweh, or God, not the Pharaoh. It is a time to be humble and to remember what it was like to be a slave. Most of all, it is a celebration of freedom.

The story of the Jewish Exodus from Egypt has inspired countless peoples suffering in slavery or oppression, notably black slaves in America. It is a reminder to all of us that freedom is invaluable, that God wants us to be free of human oppression. You don’t have to be Jewish to appreciate that blessing.

A version of this editorial was first published in The Register April 4, 2007.