The answer is: Haman led him through the streets on the king's horse

Esther 6:11

In the whirlwind mystery of the Book of Esther, unity, fate, and divine intervention loom large. When Mordecai hears about a plot against King Xerxes, he smartly informs Queen Esther, demonstrating quick thinking and loyalty. It’s fascinating that being of Jewish descent in a foreign kingdom, Mordecai uses his influence skillfully to ultimately protect not just the king but also the future of his people.

When Haman, the king's advisor who secretly despises Mordecai, is instructed to reward him, the irony is rich! Haman is the one strutting Mordecai around town on the king's horse, proclaiming his accolades. It becomes a divine twist of poetic justice, reinforcing the age-old adage that those who plot evil may often stumble over their own schemes.

This moment foreshadows a turning point in the story. The specter of impending doom that threatens the Jewish people sharpens; Mordecai's recognition strikes a contrast with Haman’s eventual downfall. In fact, the story is a poignant reminder that positions of power can shift unexpectedly—consider how high Haman rose with just a sprinkle of the king's favor, only to crash down through an untimely mix of pride and malice.

Interestingly, Mordecai's elevation leads to significant changes such as Esther's activism on behalf of her people. Their compelling narrative resonates deeply during Purim, where themes of redemption and resilience shine, embodying the support for those championing justice, even in adversarial settings. It’s a stage where heroism meets humility—all wrapped in a grand historical tapestry.