2 Samuel 18:5

18:5 The king gave this order to Joab, Abishai, and Ittai: “For my sake deal gently with the young man Absalom.” Now the entire army was listening when the king gave all the leaders this order concerning Absalom.

2 Samuel 18:12

18:12 The man replied to Joab, “Even if I were receiving a thousand pieces of silver, I would not strike the king’s son! In our very presence the king gave this order to you and Abishai and Ittai, ‘Protect the young man Absalom for my sake.’

2 Samuel 18:14

18:14 Joab replied, “I will not wait around like this for you!” He took three spears in his hand and thrust them into the middle of Absalom while he was still alive in the middle of the oak tree.