1 Samuel 17:51; 1 Samuel 31:4

1 Samuel 17:51

51 Then David ran and stood over the Philistine and took his sword and drew it out of its sheath and killed him, and cut off his head with it. When the Philistines saw that their champion was dead, they fled.

1 Samuel 31:4

4 Then Saul said to his armor bearer, "Draw your sword and pierce me through with it, otherwise these uncircumcised will come and pierce me through and make sport of me." But his armor bearer would not, for he was greatly afraid. So Saul took his sword and fell on it.