2 Samuel 20:8

Expanded Bible

⁸ When Joab and the army came to the great rock at Gibeon, Amasa came out to meet them. Joab was wearing his ·uniform [military tunic], and at his waist he wore a belt that held his ·sword [dagger] in its ·case [sheath]. As Joab stepped forward, his ·sword [dagger] fell out of its ·case [sheath].