Esther's confidence in Mordecai's piety was so great that she unhesitatingly gave credence to the message she received from him concerning the mischievous plot hatched against the king. She believed that God would execute the wishes of Mordecai. Albeit Bigthan and Teresh had no plans of the sort attributed to them by her uncle, they would conceive then now in order to make Mordecai's words true. That Esther's confidence was justified appeared at once.
The conspirators got wind of their betrayal to the king, and in good time they removed the poison they had already placed in Ahasuerus's cup. But that the lie might not be given to Mordecai, God caused poison to appear where none had been, and the conspirators were convicted of their crime. The king had the water analyzed which he was given to drink, and it was made manifest that it contained poison.
Other evidence besides existed against the two plotters. It was established that both had at the same time busied themselves about the person of the king, though the regulations of the palace assigned definite hours of service to the one different from those assigned to the other. This made it clear that they intended to perpetrate a dark deed in common.