Esau held a grudge against Jacob because of the blessing his father had given him. And Esau determined in his heart: “The days of mourning for my father are approaching; then I will kill my brother Jacob.”
The Lord says: I will not relent from punishing Edom for three crimes, even four, because he pursued his brother with the sword. He stifled his compassion, his anger tore at them continually, and he harbored his rage incessantly.
Israel sent messengers to the king of Edom, saying, ‘Please let us travel through your land,’ but the king of Edom would not listen. They also sent messengers to the king of Moab, but he refused. So Israel stayed in Kadesh.