2 Samuel 14:6

14:6 Your servant has two sons. When the two of them got into a fight in the field, there was no one present who could intervene. One of them struck the other and killed him.

2 Samuel 18:20

18:20 But Joab said to him, “You will not be a bearer of good news today. You will bear good news some other day, but not today, for the king’s son is dead.”