Judges 9:47-50
9:47 Abimelech heard that all the leaders of the Tower of Shechem were in one place.
9:48 He and all his men went up on Mount Zalmon. He took an ax in his hand and cut off a tree branch. He put it on his shoulder and said to his men, “Quickly, do what you have just seen me do!”
9:49 So each of his men also cut off a branch and followed Abimelech. They put the branches against the stronghold and set fire to it. All the people of the Tower of Shechem died – about a thousand men and women.
9:50 Abimelech moved on to Thebez; he besieged and captured it.