These are the sins of David... Amnin whose mother was Ahinoam from Jezreel - 1 Chronicles 3:1
Many gifted people fail to achieve all they could because they lack self-discipline like Amnon, King David's first son
Amnon sealed his fate when he looked lustfully at his beautiful half-sister Tamar
The Law of God specifically forbade such behavior
Amnon forced himself on Tamar which led to Amnon's murder by his outraged brother Absalom
All this happened within the family of Israel's greatest king
His life was cut shore before he could do anything of note for God or his people