They were hiring advisers to oppose them, so as to frustrate their plans, throughout the time of King Cyrus of Persia until the reign of King Darius of Persia.
But God was watching over the elders of Judah, and they were not stopped until a report could be dispatched to Darius and a letter could be sent back concerning this.
However, the prince of the kingdom of Persia was opposing me for twenty-one days. But Michael, one of the leading princes, came to help me, because I was left there with the kings of Persia.