And Esau hated Jacob because of the blessing wherewith his father blessed him; and Esau said in his heart, the days of mourning for my father are at hand; then will I slay my brother Jacob. Having failed in his attempt to change his father's mind in the matter of the patriarchal blessing, the hatred of Esau turned against Jacob, and he planned to revenge himself by murdering his brother. During the lifetime of his father he did not want to execute this threat, in order not to grieve Isaac. But after the death of Isaac, which seemed to be near, and after the days of mourning for his father, he would have no more scruples in carrying out his design.
Related Commentaries of Genesis 27:41
Genesis 27:41
41 And Esau hated Jacob because of the blessing wherewith his father blessed him: and Esau said in his heart, The days of mourning for my father are at hand; then will I slay my brother Jacob.