Friend
Jesus calls you friend.
How many friends do you have? Have any of those friends ever called you a servant?
If you had a friend who could call you a servant, that would be cool. Right? For anyone to be able to call you a servant, they would need to be a ruler.
Now, if that same friend could call everybody a servant, they would need to be the ruler over all! If you were friends with that person, it would be very cool!