1 Samuel 31:3-4

The battle went heavily against Saul, and the archers hit him; and he was severely wounded by the archers. Saul said to his armor bearer, “Draw your sword and pierce me through with it, otherwise these uncircumcised [Philistines] will come and pierce me through and abuse and mock me.” But his armor bearer would not, because he was terrified [of doing such a thing]. So Saul took his sword and fell on it.