Then Jotham ran away ¹  to Beer and lived there to escape from ²  Abimelech his half-brother. ³ 

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 

Now David’s son Absalom had a beautiful sister named Tamar. In the course of time David’s son Amnon fell madly in love with her. ¹ 

He asked Amnon, ¹  “Why are you, the king’s son, ²  so depressed every morning? Can’t you tell me?” So Amnon said to him, “I’m in love with Tamar the sister of my brother Absalom.”