Haman's hatred for Mordecai is intensified by their ancestral enmity, as Haman is an Amalekite and Mordecai a Jew. The Amalekites and Jews have been bitter enemies since Israel's wanderings in the wilderness, their conflict rooted in a long history of opposition. This deep-seated animosity fuels Haman's desire not only to eliminate Mordecai but to destroy all Jews, leading him to devise a sinister plan with the king's approval to issue a decree against them across all provinces.

In the narrative of Mordecai's life, a significant conflict arises with Haman, an Amalekite who ascends to the position of prime minister under King Ahasuerus of Persia. Haman, favored by the king, secures a decree that demands all subjects bow to him. Mordecai, however, steadfastly refuses to comply, prioritizing his loyalty to God above the king's command, mindful of God's enduring opposition to the Amalekites as declared in ancient times. Enraged by Mordecai's defiance, Haman plots a vicious revenge not just against Mordecai, but against all Jews in the Persian domain. His obsession drives him to offer the king a vast sum, equivalent to millions, to sanction the extermination of the Jewish people, falsely claiming their disobedience to royal authority and adherence only to their own laws. Consequently, Ahasuerus issues a decree for the total annihilation of the Jews and the seizure of their wealth, placing Mordecai and his people in grave peril despite his years of faithful service.

In the account of Exodus 17:8-13, the Amalekites came and fought with Israel in Rephidim. Moses instructed Joshua to choose men and fight against Amalek, while Moses stood on top of the hill with the rod of God in his hand. Joshua fought as directed, and when Moses held up his hand, Israel prevailed; but when he let it down, Amalek gained the upper hand. With Moses' hands growing heavy, Aaron and Hur supported him, ensuring his hands remained steady until sunset. Through this support, Joshua defeated Amalek and his people with the edge of the sword. The battle turned in favor of the Amalekites whenever Moses could not maintain his intercession, but with the assistance of Aaron and Hur, victory was secured for Israel.

The Amalekites, a tribe of Esau's descendants, displayed such malice against the children of Israel during their exodus from Egypt that God declared He would have war with Amalek from generation to generation. This deep-rooted enmity reflects a historical pattern of conflict between the descendants of Abraham's sons and contributes to the ongoing strife seen in the current war between the Jews and the Palestinians, whose ancestry may trace back to Israel's longtime enemies, including the Ishmaelites and Edomites.

Among the ancient enemies of Israel listed in Psalm 83:5-8, the Amalekites stand out as a persistent thorn in Israel's side throughout their history. As descendants of Esau through his grandson Amalek, they emerged from the lineage of Edom, establishing a distinct identity marked by hostility. Genesis 36:12 reveals Amalek as the son of Timna, a concubine of Esau's son Eliphaz, yet he rose to become a chief among the Edomites, demonstrating his ambition and refusal to be hindered by his birth status. His tribe grew to be known separately from Edom, notorious as the most ruthless enemy of Israel. The Amalekites' enmity is vividly illustrated in Exodus 17:8-16, where they attacked Israel at Rephidim shortly after the exodus from Egypt. Deuteronomy 25:17-18 details their cowardly assault on the rear ranks, targeting the tired, weary stragglers without fear of God, ignoring His evident presence through the pillar of fire and cloud. This act incensed the Lord, who swore to have war with Amalek from generation to generation, commanding Moses to record this enmity and ensure Joshua would blot out their remembrance from under heaven, as reiterated in Deuteronomy 25:19. Despite this divine decree, Israel failed to fully eradicate the Amalekites. In 1 Samuel 14:47-48, Saul fought against them, delivering Israel from their plundering raids. However, in 1 Samuel 15:1-3, the Lord commanded Saul to utterly destroy Amalek for their ambush on Israel during the exodus, sparing nothing. Saul's incomplete obedience in sparing King Agag and the best of their possessions led to his rejection as king, with Samuel executing Agag in 1 Samuel 15:32-33, underscoring the deep-seated animosity and God's judgment. The Amalekites' legacy of hatred persisted, manifesting in Haman, identified in Esther 3:1 as an Agagite, a descendant of Agag, thus linking him to Amalek. His genocidal plot against the Jews in the Persian Empire reflects the historical pattern of Amalekite hostility, characterized by pride, wrath, and ruthless schemes. Haman's reaction to Mordecai's refusal to bow, escalating to a plan to annihilate all Jews as seen in Esther 3:5-6, mirrors the Amalekites' consistent traits of violence and lack of mercy. The narrative in Esther positions this conflict as a renewal of the ancient enmity between Saul and Agag, highlighting the perpetual struggle between Amalek and Israel.