Esau’s Hatred of Jacob
The conflicting and antagonistic relationship between Esau and Jacob was magnified and intensified when Esau “sold his birthright to Jacob” for a mere bowl of pottage (Gen. 25:33). Jacob then had the legal right to receive the blessings of the inheritance which he received from Isaac by pretending he was Esau. When Esau realized what had happened and that Jacob now possessed the blessings that could have been his, “Esau hated Jacob because of his blessing”
This hatred was now to be an attribute and earmark of the character Esau-Edom. Throughout the rest of the Script this attribute does not change or subside.
It is clearly revealed by Scripture that Esau-Edom would be a perpetual adversary of Jacob-Israel, as it is written: “The children of Esau hated the sons of Jacob, and the hatred and enmity were very strong between them all the days, unto this day” (Jasher 58:28). Thus the descendants of Esau would hate and despise the entire race descended from Jacob. Esau’s hatred of Jacob was exhibited when “Edom refused to give Israel passage through his border” (Num. 20:21). During the eighth century B.C., the prophet Amos distinctly rebukes Edom for her cruelty and anger towards Israel.
Thus says the LORD; For three transgressions of Edom and for four, I will not turn away the punishment thereof; because he did pursue his brother with the sword, and did cast off all pity, and his anger did tear perpetually, and he kept his wrath for ever.
Some 200 years later, the prophet Ezekiel also offers condemnation against Edom or ‘mount Seir’ (the Edomites), because of their perpetual hatred for the children of Israel:
Because thou [mount Seir] has had a perpetual hatred and has shed the blood of the children of Israel by the force of the sword in the time of their calamity in the time that their iniquity had an end.
Mount Seir, representing the nation or race of Esau- Iidom, or the Edomites, has had a perpetual hatred for the children of Israel down through history. All throughout the Bible the Edomites had shown their hatred and opposition God’s chosen people Israel. This was a characteristic of these people which they would not lose.
Source: Who is Esau-Edom? by Charles Weisman