2 Samuel 2:14-16

MLV(i) 14 And Abner said to Joab, I beseech you, let the young men arise and play before us. And Joab said, Let them arise. 15 Then they arose and went over by number: twelve for Benjamin and for Ish-bosheth the son of Saul and twelve of the servants of David.
16 And each man caught his fellow by the head and thrust his sword in his fellow's side, so they fell down together. Therefore that place was called Helkath-hazzurim, which is in Gibeon.