And Esau hated Jacob because of the blessing with which his father blessed him: and Esau said in his heart, The days of mourning for my father are at hand; then will I kill my brother Jacob.
Thus says the LORD; For three transgressions of Edom, and for four, I will not turn away the punishment thereof; because he pursued his brother with the sword, and cast off all pity, and his anger tore perpetually, and he kept his anger for ever:
Then Israel sent messengers to the king of Edom, saying, Let me, I pray you, pass through your land: but the king of Edom would not listen to them. And in like manner they sent to the king of Moab: but he would not consent: and Israel stayed in Kadesh.
But Sihon did not trust Israel to pass through his territory: but Sihon gathered all his people together, and pitched in Jahaz, and fought against Israel.