2 Samuel 3
After a long ongoing war between the house of Saul and the house of David, Abner sent a message to David asking for an agreement. Abner knew that the Lord had promised David the kingdom and David's throne would be over all Israel. When Joab and David's men returned from the battle, they found Abner and Joab killed him. David was very disturbed when he learned of what had happened, saying, "I and my kingdom are forever innocent before the Lord concerning the blood of Abner... May his blood fall on the head of Joab and on his whole family!". David sang a lament and wept with his people over Abner's death. David said to his men, " Do you not realize that a commander and a great man has fallen in Israel this day? And today, though I am the anointed king, I am weak..."