2 Samuel 13:26
"Then said Absalom, If not, I pray thee, let my brother Amnon go with us. And the king said unto him, Why should he go with thee?"
Cross References (ranked by relevance)
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.
Psalm 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.
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.