Stock Photo: Traditional Jewish Matzo sheet on a Passover Seder table Passover is a predominantly Jewish holy day and festival It commemorates the story of the Exodus, in which the ancient Israelites were freed from slavery in Egypt Passover begins on the 15th day. Traditional Jewish Matzo sheet on a Passover Seder table Passover is a predominantly Jewish holy day and festival It commemorates the story of the Exodus, in which the ancient Israelites were freed from slavery in Egypt Passover begins on th