34 So Abimelech and all his men went by night and split into four groups, stationing themselves around Shechem. 35 Gaal was standing at the city gates when Abimelech and his army came out of hiding. 36 When Gaal saw them, he said to Zebul, "Look, there are people coming down from the hilltops!" Zebul replied, "It's just the shadows on the hills that look like men." 37 But again Gaal said, "No, people are coming down from the hills. And another group is coming down the road past the Diviners' Oak. " 38 Then Zebul turned on him and asked, "Now where is that big mouth of yours? Wasn't it you that said, 'Who is Abimelech, and why should we be his servants?' The men you mocked are right outside the city! Go out and fight them!" 39 So Gaal led the leading citizens of Shechem into battle against Abimelech. 40 But Abimelech chased him, and many of Shechem's men were wounded and fell along the road as they retreated to the city gate. 41 Abimelech returned to Arumah, and Zebul drove Gaal and his brothers out of Shechem. 42 The next day the people of Shechem went out into the fields to battle. When Abimelech heard about it, 43 he divided his men into three groups and set an ambush in the fields. When Abimelech saw the people coming out of the city, he and his men jumped up from their hiding places and attacked them. 44 Abimelech and his group stormed the city gate to keep the men of Shechem from getting back in, while Abimelech's other two groups cut them down in the fields. 45 The battle went on all day before Abimelech finally captured the city. He killed the people, leveled the city, and scattered salt all over the ground.
Matthew Henry's Commentary on Judges 9:34-45
Commentary on Judges 9:30-49
(Read Judges 9:30-49)
Abimelech intended to punish the Schechemites for slighting him now, but God punished them for their serving him formerly in the murder of Gideon's sons. When God uses men as instruments in his hand to do his work, he means one thing, and they another. That, which they hoped would have been for their welfare, proved a snare and a trap, as those will certainly find, who run to idols for shelter; such will prove a refuge of lies.