What does Judges 9:48 mean?
The city of Shechem is surrounded by nearby mountains, many of which have played a significant role in Abimelech's story (Judges 9:6–7). Mount Zalmon is unknown to modern scholars, but it was apparently well forested.Intent on destroying who and what remains in Shechem (Judges 9:22–25; 39–41), Abimelech takes an ax and leads his men to Zalmon. He does not explain anything. Instead, he just shows his followers what to do. He cuts down as much brushwood as he can carry on his shoulder and tells those with him to quickly do the same. He is in a hurry to be done with Shechem once and for all.
While Abimelech is cutting brush, his enemies are huddled in a temple, believing they are safe (Judges 9:46–47). The Hebrew terminology used here implies they are in a kind of underground bunker: a "stronghold." Abimelech brings wood, rather than more soldiers, and proves this location is not invincible (Judges 9:49).