Thematic Bible: David chides joab for killing abner

Afterward when David heard it, he said, "I and my kingdom are innocent before the LORD forever of the blood of Abner the son of Ner. "May it fall on the head of Joab and on all his father's house; and may there not fail from the house of Joab one who has a discharge, or who is a leper, or who takes hold of a distaff, or who falls by the sword, or who lacks bread." So Joab and Abishai his brother killed Abner because he had put their brother Asahel to death in the battle at Gibeon. read more.
Then David said to Joab and to all the people who were with him, "Tear your clothes and gird on sackcloth and lament before Abner." And King David walked behind the bier.