Esther 3:2-5

2As a result, all the king’s servants who were at the king’s gate were bowing and paying homage to Haman, for the king had so commanded. However, Mordecai did not bow, nor did he pay him homage.

3Then the servants of the king who were at the king’s gate asked Mordecai, “Why are you violating the king’s commandment?”

4And after they had spoken to him day after day without his paying any attention to them, they informed Haman to see whether this attitude on Mordecai’s part would be permitted. Furthermore, he had disclosed to them that he was a Jew.

5When Haman saw that Mordecai was not bowing or paying homage to him, he was filled with rage.