Widows: Windows to Mashiach

Why does the mitzvah of yibum play a central role in Megillat Ruth? As a special example of the mitzvah of hesed and an ancient concept predating matan Torah, yibum is critical to resolving Creation's oldest paradox, how to continue a family line after tragedy strikes. Yehudah, Tamar, and King David are among the actors in this compelling drama.