Ezra 4:13-14

4:13 Let the king also be aware that if this city is built and its walls are completed, no more tax, custom, or toll will be paid, and the royal treasury will suffer loss. 4:14 In light of the fact that we are loyal to the king, and since it does not seem appropriate to us that the king should sustain damage, we are sending the king this information

Ezra 10:10

10:10 Then Ezra the priest stood up and said to them, “You have behaved in an unfaithful manner by taking foreign wives! This has contributed to the guilt of Israel.