Esther 3:2

After these things did king Ahasuerus promote Haman the son of Hammedatha the Agagite, and advanced him, and set his seat above all the princes that were with him.

Then the king's servants, which were in the king's gate, said unto Mordecai, Why transgressest thou the king's commandment?

Now it came to pass, when they spake daily unto him, and he hearkened not unto them, that they told Haman, to see whether Mordecai's matters would stand: for he had told them that he was a Jew.

And when Haman saw that Mordecai bowed not, nor did him reverence, then was Haman full of wrath.