After all this took place, King Ahasuerus honored Haman, son of Hammedatha the Agagite. He promoted him in rank and gave him a higher position than all the other officials.
References for Esther 3:1
The entire royal staff at the King's Gate bowed down and paid homage to Haman, because the king had commanded this to be done for him. But Mordecai would not bow down or pay homage.
References for Esther 3:2
The members of the royal staff at the King's Gate asked Mordecai, "Why are you disobeying the king's command?"
When they had warned him day after day and he still would not listen to them, they told Haman to see if Mordecai's actions would be tolerated, since he had told them he was a Jew.
When Haman saw that Mordecai was not bowing down or paying him homage, he was filled with rage.
References for Esther 3:5
And when he learned of Mordecai's ethnic identity, Haman decided not to do away with Mordecai alone. He set out to destroy all of Mordecai's people, the Jews, throughout Ahasuerus' kingdom.
References for Esther 3:6