This traditional Jewish holiday is commenced with the Passover Seder. Seder is Hebrew for order. The Passover Seder is a ritual feast often celebrated by members of the same community or family. Slavery and freedom are the themes of the Seder. Jewish people all over the world pause to commemorate the liberation of the Israelites from slavery in ancient Egypt. In performing all their rituals, special blessings, and unique Passover songs, Seder participants use the ancient text of the Haggadah.