Judges 9:51 in the King James Version
But there was a strong tower within the city, and thither fled all the men and women, and all they of the city, and shut it to them, and gat them up to the top of the tower.
Context
50 Then Abimelech went to Thebez and encamped against Thebez, and took it.
51 But there was a strong tower within the city, and all the men and women of the city fled there, and shut themselves in, and went up to the roof of the tower.
52 Abimelech came to the tower and fought against it, and came near to the door of the tower to burn it with fire.