The Essence of Yibum: Taking Over a Brother's Name

Full Summary

This shiur presents a profound analysis of the mitzvah (מצוה) of yibum (levirate marriage) found in Parshas Ki Seitzei. The fundamental question addressed is how yibum can be permitted when it involves marrying one's brother's wife (eshes ach), which is normally an ervah (forbidden relationship). The shiur argues that yibum is not a heter (dispensation) for eshes ach, but rather a complete transformation where the yavam (brother-in-law) takes over the deceased brother's shem (name/essence). Drawing from the pasuk in Bereishis where Adam couldn't have a complete shem without an ezer k'negdo, the shiur explains that a person's shem includes both him and his wife as one unit. When performing yibum, the yavam acquires his brother's shem, making the woman his own wife rather than his brother's widow. This explains why tzaros (co-wives) are forbidden in yibum - because taking over the brother's shem includes all his wives, and if one is an ervah, the entire shem cannot be acquired. The requirement of 'ben ein lo' (no son) is explained as ensuring the deceased's shem can be completely transferred - if children exist, part of the brother's essence remains with them. An aylonis (barren woman) cannot fall to yibum because, lacking the ability to procreate, she never achieved complete shem-connection with her husband. The shiur addresses why yibum must be performed lishmah - because the act specifically requires taking over the brother's shem rather than marrying the woman for personal reasons. This connects to the concept of malchus (kingship), as both yibum and monarchy require the ability to subjugate one's own desires to serve another's purpose. The difficulty of yibum lies not in the marriage itself, but in allowing one's body to serve another's destiny while retaining one's original physical form - similar to Yaakov becoming Yisrael while maintaining his original body. Chalitzah represents the rejection of this self-subjugation, symbolized by removing the shoe (representing the body's connection to physical movement and strength). The entire parsha requires lashon hakodesh because it deals with shamot (names/essences), and lashon hakodesh is the language of spiritual essence. The shiur concludes that yibum represents the highest level of betzelem Elokim - allowing oneself to be completely utilized for another's purpose, mirroring how Hashem (ה׳) allows His power to be used even when people sin against Him.