Judges 9:30-33

30Some people told Zebul, the town's officer, what Gaal had said. Zebul was very angry when he heard this.

31He sent men secretly to Abimelech with a message. They told him, ‘Ebed's son Gaal and his brothers have come to live in Shechem. They are causing the people of the city to turn against you.

32So you must come here in the night with your men. Hide in the fields outside the city.

33When the sun rises in the morning, quickly attack the city. When Gaal and his men come out to fight, you can do to them whatever you want.’