God did this in order that the crime against Jerub-Baal’s seventy sons, the shedding of their blood, might be avenged on their brother Abimelek and on the citizens of Shechem, who had helped him murder his brothers. In opposition to him these citizens of Shechem set men on the hilltops to ambush and rob everyone who passed by, and this was reported to Abimelek.
Now Gaal son of Ebed moved with his clan into Shechem, and its citizens put their confidence in him. After they had gone out into the fields and gathered the grapes and trodden them, they held a festival in the temple of their god. While they were eating and drinking, they cursed Abimelek. Then Gaal son of Ebed said, “Who is Abimelek, and why should we Shechemites be subject to him? Isn’t he Jerub-Baal’s son, and isn’t Zebul his deputy? Serve the family of Hamor, Shechem’s father! Why should we serve Abimelek? If only this people were under my command! Then I would get rid of him. I would say to Abimelek, ‘Call out your whole army!’”