In his final parting moments with Joseph, after elevating his grandsons Ephraim and Manasseh to the status of full tribes, Jacob suddenly revisits the most painful wound of his past: the sudden passing of his beloved Rachel. This abrupt shift in conversation serves a specific purpose. The primary approach among commentators is that Jacob is offering a preemptive apology. Having just made Joseph swear to carry him out of Egypt and bury him in the ancestral Cave of Machpelah, Jacob anticipates his son's quiet pain and bewilderment. Joseph might naturally wonder how his father could demand such a monumental effort, considering Jacob did not do the same for Joseph's own mother, burying her instead on the side of the road [רש״י, רמב״ן, רד״ק, שד״ל ואחרים]. Jacob deliberately saved this explanation for his final moments, not mentioning it during the oath itself, because he wished to avoid speaking of tragedy and sorrow until his dying day [גור אריה, יריעות שלמה].
Other commentators connect this memory directly to the adoption of Joseph's sons. Because Rachel died prematurely, she did not live to bear the number of tribal patriarchs she was destined to mother. Elevating Ephraim and Manasseh to the rank of tribal heads serves to fill this void, granting Rachel her rightful share in the building of the nation [ספורנו, אור החיים, צרור המור]. Furthermore, because she was not laid to rest in the family plot, she lost a central inheritance in the land; granting independent territories to Ephraim and Manasseh acts as a form of compensation [העמק דבר]. Jacob's profound heartbreak reflects the reality that a wife's passing is felt most acutely by her husband [ספורנו, רלב״ג, תורה תמימה]. Alternatively, his deep grief hints at a lingering sense of guilt. Jacob harbored fears that Rachel died because of him, either due to his delay in fulfilling a vow or because of his earlier, unwitting curse to Laban that whoever was found with his stolen idols would not live [אור החיים, שפתי כהן].
In his defense, Jacob details the severe realities that prevented him from bringing Rachel to Hebron. Her death struck suddenly while he was burdened with massive flocks and young children, making it impossible to abandon them and rush forward. Furthermore, he lacked physicians and spices to embalm her body, and traveling through the summer heat risked severe decay along the journey [רמב״ן, רד״ק, רבנו בחיי]. Jacob explains the specific conditions of the road, noting that the ground was as dry and perforated as a sieve. He shares this detail so Joseph will know that heavy rains or muddy roads were not the obstacles that kept him from continuing the journey [רש״י, מזרחי, גור אריה]. He could not even bring her into the nearby city of Bethlehem to bury her in a settled area. Because she died in childbirth and was covered in blood, transporting her body any further would have compromised her dignity, leaving him no choice but to bury her in the field exactly where she passed [חזקוני, צאינה וראינה, רבנו חננאל].
Beyond these physical constraints, deep familial complexities influenced Jacob's decision. He felt a sense of shame at the prospect of burying two sisters alongside his ancestors. Leah was his first wife, married under entirely permissible circumstances, while his subsequent marriage to Rachel could be perceived as a violation of tradition, anticipating the Torah's future prohibition against marrying two sisters [רמב״ן, רבנו בחיי, נחלת יעקב]. Additionally, at that time, Esau was still fiercely contesting ownership of the Cave of Machpelah, which would have made burying Rachel there dangerously complicated [חזקוני].
Despite all these natural explanations, commentators agree that Rachel's roadside burial was not merely a matter of circumstance, but a profound act guided by Divine decree for the sake of the future. Burying her on the road was a prophetic anticipation of the path the Israelites would one day walk in sorrow. Jacob laid her to rest there so that generations later, when the conqueror Nebuzaradan would drive the Israelites into exile, they would pass by her grave broken and stooped. In that dark hour, Rachel would emerge from her grave to weep and beg God for mercy upon them, and God would answer her, promising that her children would ultimately return to their borders [רש״י, רמב״ן, גור אריה, דברי דוד]. Ultimately, the location where she was buried was destined to fall within the territory of her son Benjamin. It is a far greater honor for a mother to rest eternally in the land inherited by her own children, rather than in the territory of Judah, the son of Leah [בכור שור, חזקוני].