Pesach, or Passover, is a major holiday in Jewish tradition, and is one of the three pilgrimage holidays, along with Sukkot and Shavuot. These are the holidays on which the whole Jewish people would come to Jerusalem in ancient times, when the Holy Temple was there, and would offer animal and grain sacrifices. Since the destruction of the Temple, a few of the holiday traditions have been retained, without the pilgrimage and the sacrifices, and many new traditions have been added.
Pesach, which starts on the 15th day of the Hebrew month of Nisan (usually in April), lasts for seven days and is celebrated to commemorate the exodus from Egypt - one of the main stories in the history of the Jewish people and in western culture in general. According to the Torah, the Israelites lived in Egypt, and were enslaved by the Egyptians. Moshe (Moses), an Israelite who grew up in the palace of Pharaoh, the king of Egypt, became a leader of the Israelites and asked Pharaoh to allow them to return to the Land of Israel. When Pharaoh refused, Moshe led a campaign that culminated in his people’s hurried departure from Egypt, toward the Sinai desert, where they lived for 40 years. According to Jewish tradition, during this long journey in the desert, led by Moshe and his brother Aharon, the Israelites became a united people as they prepared to conquer the Land of Israel.
Pesach is also called the holiday of Freedom, and this aspect of the holiday is emphasized in the rituals and prayers: the exodus from slavery to freedom symbolizes physical and spiritual redemption and man’s aspiration to be free.
Another important element of this holiday is family togetherness. On the eve of the holiday, called Seder night, due to the ceremonial Seder meal that is celebrated that evening, whole extended families gather around one table. It is also an important Jewish precept to invite others who have no family with whom to celebrate the holiday.
Another name for Pesach is the holiday of Unleavened Bread. The story of the exodus from Egypt relates that the Israelites left Egypt hurriedly and the dough they had prepared had no time to rise, so they baked it into matzah, unleavened bread. One of the important precepts of this holiday is the abstinence from eating leaven - any baked goods prepared with flour and allowed to rise, or prepared foods containing flour. Instead of bread, Jews eat matzah. Religious (and traditional) Jews observe this aspect of the holiday meticulously.
One more name for Pesach is the holiday of Spring, marking the season in which Pesach is celebrated.
The first day of the holiday, as well as the last day (which is known as the “second holiday”) are holy rest days, on which all productive work is forbidden. The intermediate days are called Chol ha-Mo’ed, and are part-holiday, part-regular days.