Chasidut к Берешит 47:30

According to Jewish mystics, Joseph was the paradigm of virtue and righteousness, the personification of tzaddik yesod olam, a man of such holiness that his merit sustains the entire world. Joseph was also Jacob’s favorite son, and they shared a special relationship.³²See Gen. 30:25 and Rashi’s comment on that verse; Gen. 37:2 and the respective Rashi; also Gen. 37:11, 37:35, 45:27-28. When Jacob lay dying he called Joseph and requested burial in the Land of Israel. Although Joseph promised that he would ensure his father’s interment in Israel (Gen. 47:30), Jacob was not satisfied and demanded that an oath be sworn in God’s name: “And he [Jacob] said ‘Swear to me’ and he [Joseph] swore to him, and Israel [another name for Jacob] bowed back toward the head of the bed” (Gen. 47:31).