'Guard' in the Bible

So King Rehoboam made shields of bronze in their place, and committed them to the care of the commanders of the guard who guarded the doorway of the king’s house.

As the king passed by, he cried to the king and said, “Your servant went out into the midst of the battle; and behold, a man turned aside and brought a man to me and said, ‘Guard this man; if for any reason he is missing, then your life shall be for his life, or else you shall pay a talent of silver.’