שמות, פרק ו׳, פסוק י״ח

The historical records of the Israelite families are carefully selected guides pointing toward future events. The genealogy of the tribe of Levi focuses strictly on the family branch destined to lead the nation and shape its history, leaving out those who do not play an active role in the unfolding narrative. For example, while four sons of Kehat are introduced, only the descendants of Amram, Yitzhar, and Uzziel are detailed. The children of the fourth son, Hebron, are completely omitted. The primary approach among commentators is that this omission is intentional and does not imply that Hebron lacked children. Rather, the record only includes descendants necessary for understanding future events. The children of Amram are listed because of Moses and Aaron. Yitzhar's family is mentioned to set the stage for the rebellion of Korah. Uzziel's descendants are included to prepare for the later roles of Mishael and Elzaphan. Families without a specific role in upcoming events, such as those of Hebron or Ithamar, are simply left out.

Despite the central importance of Amram's family, his daughter Miriam is noticeably absent from this record. Her name does not appear until the nation's song of praise at the sea. Her absence reflects a deeper narrative reality. Miriam prophesied about the birth of the savior of the Israelites, and from that moment, she stood at a distance, waiting in secret to see how her words would unfold. Her prophecy only reached its complete fulfillment when the Egyptians drowned in the sea. It is only at that moment of ultimate realization that she steps out of hiding and is explicitly mentioned by name [ברכת אשר על התורה].

The record also documents the exact lifespan of Kehat. His age is highlighted to honor his distinguished status as the grandfather of Moses and Aaron, who served as God's messengers [אבן עזרא, ביאור שטיינזלץ]. Furthermore, the specific number of years provides a crucial key for understanding the timeline of the Egyptian exile. Kehat was among the original group that went down to Egypt. If one adds his entire lifespan to the years of his son Amram and the eighty years of Moses, the total falls short of four hundred years, especially since the lives of fathers and sons naturally overlap. This calculation proves that the four hundred years of exile promised to Abraham did not begin with the descent into Egypt, but actually started much earlier, on the day Isaac was born [רש״י].