The funeral was supposed to be solemn. Targum Pseudo-Jonathan records one of the wildest scenes in all of midrash instead. "When his sons had brought him into the land of Kenaan, and the thing was heard by Esau the Wicked, he journeyed from the mountain of Gebala with many legions, and came to Hebron, and would not suffer Joseph to bury his father in the Double Cave" (Genesis 50:13).
Esau shows up at his twin brother's funeral with an army. His claim: the Cave of Machpelah belongs to him, not to Jacob's line. The brothers stand at the mouth of the tomb, armed and stalled, while Jacob's coffin waits.
Then Naphtali runs. The Targum had already identified Naphtali as the swift messenger who could reach Egypt and back (Genesis 49:21). Now it pays off. "Forthwith went Naphtali and ran, and went down to Mizraim, and came in that day, and brought the Instrument that Esau had written for Jakob his brother in the controversy of the Double Cave." The deed. The document. Proof that Esau had sold his share for a price years earlier.
Before Naphtali could return, Hushim son of Dan — who was deaf and had only just understood what was happening — drew his sword and struck off Esau's head. The Targum adds a haunting detail: Esau's head rolled into the cave and came to rest on Isaac's chest. The Wicked son returned to his father, after all. The sons of Esau buried the body. The sons of Jacob buried Jacob. And the family vault, at last, held both twins.