Joab kills Absalom
18:9 And Absalom met the servants of David. And Absalom rode upon a mule, and the mule went under the thick boughs of a great oak, and his head caught hold of the oak, and he was taken up between the heaven and the earth; and the mule that [was] under him went away.
18:10 And a certain man saw [it], and told Joab, and said, Behold, I saw Absalom hanged in an oak.
18:11 And Joab said unto the man that told him, And, behold, thou sawest [him], and why didst thou not smite him there to the ground? and I would have given thee ten [shekels] of silver, and a girdle.
18:12 And the man said unto Joab, Though I should receive a thousand [shekels] of silver in mine hand, [yet] would I not put forth mine hand against the king's son: for in our hearing the king charged thee and Abishai and Ittai, saying, Beware that none [touch] the young man Absalom.
18:13 Otherwise I should have wrought falsehood against mine own life: for there is no matter hid from the king, and thou thyself wouldest have set thyself against [me].
18:14 Then said Joab, I may not tarry thus with thee. And he took three darts in his hand, and thrust them through the heart of Absalom, while he [was] yet alive in the midst of the oak.
II Book of Samuel