Absalom was furious that his half brother Amnon had raped his sister Tamar and thrown her out in disgrace. He waited. And he waited. Two years go by. The authorities have done nothing to Amnon. His dad the king has done nothing to Amnon. Now it is time for Absalom to enact his revenge.
23 "Two years later, when Absalom’s sheep were being sheared at Baal-hazor near Ephraim, Absalom invited all the king’s sons to come to a feast. 24 He went to the king and said, “My sheep-shearers are now at work. Would the king and his servants please come to celebrate the occasion with me?”
25 The king replied, “No, my son. If we all came, we would be too much of a burden on you.” Absalom pressed him, but the king would not come, though he gave Absalom his blessing.
26 “Well, then,” Absalom said, “if you can’t come, how about sending my brother Amnon with us?”
“Why Amnon?” the king asked. 27 But Absalom kept on pressing the king until he finally agreed to let all his sons attend, including Amnon. So Absalom prepared a feast fit for a king.[e]
28 Absalom told his men, “Wait until Amnon gets drunk; then at my signal, kill him! Don’t be afraid. I’m the one who has given the command. Take courage and do it!” 29 So at Absalom’s signal they murdered Amnon. Then the other sons of the king jumped on their mules and fled.
30 As they were on the way back to Jerusalem, this report reached David: “Absalom has killed all the king’s sons; not one is left alive!” 31 The king got up, tore his robe, and threw himself on the ground. His advisers also tore their clothes in horror and sorrow.
32 But just then Jonadab, the son of David’s brother Shimea, arrived and said, “No, don’t believe that all the king’s sons have been killed! It was only Amnon! Absalom has been plotting this ever since Amnon raped his sister Tamar. 33 No, my lord the king, your sons aren’t all dead! It was only Amnon.” 34 Meanwhile Absalom escaped.
Then the watchman on the Jerusalem wall saw a great crowd coming toward the city from the west. He ran to tell the king, “I see a crowd of people coming from the Horonaim road[f] along the side of the hill.”
35 “Look!” Jonadab told the king. “There they are now! The king’s sons are coming, just as I said.”
36 They soon arrived, weeping and sobbing, and the king and all his servants wept bitterly with them. 37 And David mourned many days for his son Amnon.
Absalom fled to his grandfather, Talmai son of Ammihud, the king of Geshur. 38 He stayed there in Geshur for three years. 39 And King David, now reconciled to Amnon’s death, longed to be reunited with his son Absalom."
Amnon committed the crime of rape and got away with it. So Absalom kills him. Now Absalom has committed murder. His only consequence? He has to flee to another country for 3 years.
David's lack of disciplining his children is going to catch up with him and bite him with a vengence.