'Keeper' in the Bible

And David rose up early in the morning, and left the sheep with a keeper, and took, and went, as Jesse had commanded him; and he came to the place of the wagons, as the host which was going forth to the fight shouted for the battle.

And David left his baggage in the hand of the keeper of the baggage, and ran to the army, and came and saluted his brethren.

And David said to Achish, Therefore thou shalt know what thy servant will do. And Achish said to David, Therefore will I make thee keeper of my head for ever.