Jacob's final blessing to Joseph marks the climax of a multi-generational legacy, elevating the spiritual and material gifts of the Patriarchs to unprecedented heights. As Jacob bestows this profound power, he compares his own blessings to those of his ancestors, Abraham and Isaac. The primary approach among commentators is that Jacob declares his blessings—or those he received directly from God—to be far greater than those of his predecessors. While the earlier blessings were restricted by geographic borders and excluded certain descendants like Ishmael and Esau, Jacob’s blessing is boundless and encompasses all of his children [רש״י, רשב״ם, ספורנו, בכור שור, תולדות יצחק]. Alternatively, this comparison is not a claim of superiority, but rather of accumulation; Jacob’s blessings are added to and carried upon the solid foundation laid by his ancestors [אבן עזרא, רד״ק, שד״ל, רש״ר הירש]. Another perspective contrasts the circumstances of these gifts, noting that while Jacob obtained his blessings from his father in secrecy and through deception, he now grants his blessings to Joseph entirely in the open [כלי יקר].
The ancestral origins of these blessings are generally understood to refer directly to Abraham and Isaac, the parents who brought Jacob into the world [רש״י, רד״ק, שד״ל]. However, some view the reference to his ancestors as a poetic allusion to mountains, creating a natural parallel with the everlasting hills mentioned as the ultimate destination of the blessing [רשב״ם, רבנו בחיי, רש״ר הירש]. This expansion toward the eternal hills is understood in two distinct ways. One approach views it as a physical and temporal boundary, meaning the blessing will spread to the very edges of the earth and endure forever, remaining as stable and permanent as the ancient mountains themselves [אבן עזרא, רשב״ם, רד״ק, מלבי״ם, ביאור יש״ר]. A second approach interprets this expansion through the lens of desire and longing. In this view, Jacob's blessings are so magnificent that the eternal hills themselves coveted them. Symbolically, these hills represent the Matriarchs, particularly Rebecca, who deeply desired these blessings and orchestrated events to ensure Jacob received them from Isaac [רש״י, ריב״א, שפתי חכמים, פענח רזא, דעת זקנים].
All of this boundless abundance is ultimately directed to rest upon the head of Joseph, whom Jacob crowns with a title reflecting both his isolation and his royalty. This unique designation carries a dual meaning that perfectly encapsulates his life. On one level, it speaks to deep separation and asceticism. Joseph was forcibly torn away from his family when sold into slavery, yet he also maintained a profound moral distance from his surroundings, successfully mastering his desires during his trials in Egypt. Some traditions even suggest that from the day he was separated from his brothers, he lived a life of strict abstinence, refusing to drink wine out of deep sadness [רש״י, רלב״ג, בכור שור, תורה תמימה, רש״ר הירש, פרדס יוסף]. On another level, this same concept signifies a royal crown or diadem. It was precisely because of his unyielding righteousness and moral separation that Joseph merited to be crowned as a leader and ruler over his brothers. Through his trials, he proved himself to be the most worthy recipient of these supreme blessings, transforming his painful exile into a crown of enduring leadership [רשב״ם, ספורנו, רד״ק, חזקוני, מלבי״ם].