'Armor bearer' in the Bible

Then Saul said to his armor bearer, “Draw your sword and run me through with it, otherwise these uncircumcised [Philistines] will come and abuse and humiliate me.” But his armor bearer would not, for he was terrified. So Saul took his own sword and fell on it.

When his armor bearer saw that Saul was dead, he also fell on his sword and died.

Zelek the Ammonite, Naharai the Berothite, the armor bearer of Joab the son of Zeruiah [David’s half sister],