Nehemiah 4:6-9

So we built the wall and the whole wall was joined together to half its height, for the people had a mind to work. Now when Sanballat, Tobiah, the Arabs, the Ammonites and the Ashdodites heard that the repair of the walls of Jerusalem went on, and that the breaches began to be closed, they were very angry. All of them conspired together to come and fight against Jerusalem and to cause a disturbance in it. But we prayed to our God, and because of them we set up a guard against them day and night.