Nehemiah 4:7-9

7But when Sanballat and Tobiah and the Arabs and the Ammonites and the Ashdodites heard that the repairing of the walls of Jerusalem was going forward and that the breaches were beginning to be closed, they were very angry.

8And they all plotted together to come and fight against Jerusalem and to cause confusion in it.

9And we prayed to our God and set a guard as a protection against them day and night.