'Servant' in the Bible

So Moses said to the Lord, “Why have You been so hard on Your servant? And why have I not found favor in Your sight, that You have laid the burden of all this people on me?

“Not so, with My servant Moses,He is faithful in all My household;

With him I speak mouth to mouth,Even openly, and not in dark sayings,And he beholds the form of the Lord.Why then were you not afraidTo speak against My servant, against Moses?”

But My servant Caleb, because he has had a different spirit and has followed Me fully, I will bring into the land which he entered, and his descendants shall take possession of it.