What Are Blessings And Curses, Really?

In Parshat Ki Tavo, the Israelites are told that when they enter the land they must publicly bless those who keep the commandments, and curse those who violate them. And they have to proclaim these blessings and curses on two mountains – Mount Gerizim and Mount Eval. But why? What's so special about these mountains? And why must the blessings and curses be reviewed in such a public way? Join Daniel Loewenstein and Beth Lesch as they use the gematria, grammar and topography hidden in Ki Tavo to consider what blessings and curses are really about.