§ 02 · King James Bible
2 Samuel 3:30
So Joab and Abishai his brother slew Abner, because he had slain their brother Asahel at Gibeon in the battle.
Simple English
So, Joab and his brother Abishai killed Abner. They did this because Abner had killed their other brother, Asahel, during a fight at a place called Gibeon.
* Work in progress - there may be occasional inaccuracies