He did this so the violent deaths of Jerub-Baal’s seventy sons might be avenged and Abimelech, their half-brother ¹  who murdered them, might have to pay for their spilled blood, along with the leaders of Shechem who helped him murder them. ² 

So each of his men also cut off a branch and followed Abimelech. They put the branches ¹  against the stronghold and set fire to it. ²  All the people ³  of the Tower of Shechem died – about a thousand men and women.

However, there is an annual festival to the Lord in Shiloh, which is north of Bethel ¹  (east of the main road that goes up from Bethel to Shechem) and south of Lebonah.”