2 Samuel 13:26

So Absalom said, "But [will you] not let Amnon my brother go with us?" And the king said to him, "Why should he go with you?"

2 Samuel 3:27

When Abner returned to Hebron, Joab took him aside to the middle of the gate to speak with him in private. Then he struck him in the stomach there and he died, {for he had shed the blood of Asahel his brother}.

2 Samuel 11:13-15

David invited him, and he ate and drank in his presence {so that he became drunk}, and he went out in the evening to lie on his bed with the servants of his lord, but he did not go down to his house.

2 Samuel 20:9

Then Joab said to Amasa, "Is it peace, O you my brother?" Then the right hand of Joab took hold of the beard of Amasa [as if] to kiss him.

Psalm 55:21

The {buttery words} of his mouth were smooth, but [there was] battle in his heart. His words were smoother than oil, but they [were] drawn swords.

Treasury of Scripture Knowledge

Summary

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?

Bible References

Let my brother

2 Samuel 3:27
When Abner returned to Hebron, Joab took him aside to the middle of the gate to speak with him in private. Then he struck him in the stomach there and he died, {for he had shed the blood of Asahel his brother}.
2 Samuel 11:13
David invited him, and he ate and drank in his presence {so that he became drunk}, and he went out in the evening to lie on his bed with the servants of his lord, but he did not go down to his house.
2 Samuel 20:9
Then Joab said to Amasa, "Is it peace, O you my brother?" Then the right hand of Joab took hold of the beard of Amasa [as if] to kiss him.
Psalm 55:21
The {buttery words} of his mouth were smooth, but [there was] battle in his heart. His words were smoother than oil, but they [were] drawn swords.