Nehemiah 6:17

6:17 In those days the aristocrats of Judah repeatedly sent letters to Tobiah, and responses from Tobiah were repeatedly coming to them.

Nehemiah 13:21

13:21 But I warned them and said, “Why do you spend the night by the wall? If you repeat this, I will forcibly remove you!” From that time on they did not show up on the Sabbath.