Shared ground
Genesis 50:1–6 presents grief, burial duty, and political reality side by side. Joseph’s mourning is personal and physical: he falls on Jacob’s face, weeps, and kisses him (explicit). The narrative then slows down to mark time: Jacob is embalmed and Egypt participates in an extended mourning period (explicit). The passage also shows Joseph’s real authority in Egypt, but not unlimited freedom: he still seeks royal permission to leave the country (explicit).
The text highlights continuity with earlier promises and family identity by calling Jacob “Israel” during the embalming (explicit). Joseph frames his travel request as fidelity to an oath-bound obligation to his father, and as continued loyalty to Pharaoh because he will return (explicit).
Where interpretation differs
Why Joseph uses intermediaries rather than speaking to Pharaoh directly (v.4). Some read this as normal court procedure and tact: Joseph respects protocol and uses the proper channel (inference from “house of Pharaoh”). Others think Joseph may be temporarily restricted from appearing before Pharaoh because of mourning or ritual impurity connected with contact with a dead body, so he needs others to speak for him (inference; the text itself does not state a reason).
How the “forty days” and “seventy days” relate (v.3). Some take the numbers as sequential (first forty for embalming, then seventy for mourning). Others think the seventy days is the total mourning window, with the forty days included within it (both are plausible; the verse does not explicitly map the overlap).
Why the disagreement exists
The passage gives actions and time markers but does not explain motives (why Joseph uses intermediaries) or the exact relationship between the two time periods. Because the story assumes familiarity with Egyptian court and funerary customs, readers supply background knowledge differently.
What this passage clearly contributes
This scene shows that Genesis is comfortable describing Israel’s family using Egyptian practices (embalming, public mourning) without treating those practices as a denial of Jacob’s identity or Joseph’s faithfulness (inference drawn from the calm narrative presentation). It also underlines the seriousness of sworn family obligations: Joseph’s plan is shaped by a promise made at death’s approach (Genesis 47:29–31), and even Pharaoh affirms that such an oath should be honored (explicit in v.6). Finally, the passage sets up the next movement of the story: Israel’s family will leave Egypt temporarily to bury Jacob in Canaan, yet Joseph emphasizes return, keeping the family’s life in Egypt stable for now (explicit).