2 Samuel 3:27
And when Abner was returned to Hebron, Joab took him aside in the gate to speak with him quietly, and smote him there under the fifth rib, that he died, for the blood of Asahel his brother.
2 Samuel 11:13-15
13
And when David had called him, he did eat and drink before him; and he made him drunk: and at even he went out to lie on his bed with the servants of his lord, but went not down to his house.
14
And it came to pass in the morning, that David wrote a letter to Joab, and sent it by the hand of Uriah.
15
And he wrote in the letter, saying, Set ye Uriah in the forefront of the hottest battle, and retire ye from him, that he may be smitten, and die.
2 Samuel 20:9
And Joab said to Amasa, Art thou in health, my brother? And Joab took Amasa by the beard with the right hand to kiss him.
Psaumes 55:21
The words of his mouth were smoother than butter, but war was in his heart: his words were softer than oil, yet were they drawn swords.