CNN.com Religion Editor Dan Gilgoff explains the Jewish festival of Passover, which starts at sundown Monday and commemorates the Israelites' liberation from slavery in Egypt thousands of years ago.

Watch the video above to learn more about the Seder – the meal in which the story of Exodus is told – and the various symbols used during the holiday, including matzo (unleavened bread), bitter herbs, salt water and a lamb shank bone.

Read "Let my people go: Understanding the Passover Seder" on the CNN Belief Blog.

Previously - Stephanie Izard's Five Favorite Matzo Toppers