A common Passover greeting is "chag sameach," a Hebrew expression which literally means "joyous festival" but is translated to "happy holidays." Another Hebrew expression used during Passover is "chag kasher v'same'ach," which wishes the person being greeted a happy and kosher holiday. "Moed tov moadim l'simcha," which wishes a good festival period, is used during the intermediate days of Passover.
Passover is called "Pesach" in Hebrew. Passover is a celebration of the story in the Hebrew Bible, in which God frees the Jewish people from the Egyptians. In the story, God inflicts 10 plagues on the ancient Egyptians. The Jewish people were spared from the plagues by marking their doorposts with a lamb's blood. The term Passover describes this event, when God passed over the homes with lamb's blood on the doorpost. It begins on the 15th day of Nisan, a Hebrew month. The festival lasts for seven days in Israel and eight days for Jewish people living elsewhere.
Matzo, which is an unleavened flatbread, is eaten for all of Passover; it is made from flour and water. On the first night of Passover, Jewish families have a Seder, which is a dinner that involves retelling the story of the Jewish people escaping from Egypt. Seder means "order" in Hebrew, and the Seder is broken down into 15 specific sections.