Judges 9:30-33

30When Zebul, the ruler of the city, heard the words of Gaal son of Ebed, he was angry.

31So he secretly sent messengers to Abimelech, saying, “Beware! Gaal son of Ebed and his brothers have come to Shechem and are turning the city against you.

32Now tonight, you and the troops with you, come and wait in ambush in the countryside.

33Then get up early, and at sunrise attack the city. When he and the troops who are with him come out against you, do to him whatever you can.”