2 Samuel 20:8
When they were near the big rock that is in Gibeon, Amasa came to them. Now Joab was dressed in military attire and had a dagger in its sheath belted to his waist. When he advanced, it fell out.
2 Samuel 2:13
Joab son of Zeruiah and the servants of David also went out and confronted them at the pool of Gibeon. One group stationed themselves on one side of the pool, and the other group on the other side of the pool.
2 Samuel 3:30
So Joab and his brother Abishai killed Abner, because he had killed their brother Asahel in Gibeon during the battle.
2 Samuel 20:4-5
Then the king said to Amasa, "Call the men of Judah together for me in three days, and you be present here with them too."