Esther 3:3-7

Then the king’s servants who were at the king’s gate said to Mordecai, “Why are you violating the king’s command?”

Now it was when they had spoken daily to him and he would not listen to them, that they told Haman to see whether Mordecai’s reason would stand; for he had told them that he was a Jew.

When Haman saw that Mordecai neither bowed down nor paid homage to him, Haman was filled with rage.

But he considered it beneath his dignity to kill Mordecai alone, for they had told him who the people of Mordecai were; so Haman sought to annihilate all the Jews, the people of Mordecai, who were found throughout the kingdom of Ahasuerus.

In the first month, which is the month Nisan, in the twelfth year of King Ahasuerus, Pur, that is the lot, was cast before Haman from day to day and from month to month, until the twelfth month, that is the month Adar.