'Servants' in the Bible

Who has made us able to be servants of a new agreement; not of the letter, but of the Spirit: for the letter gives death, but the Spirit gives life.

For this reason, because we have been made servants of this new order, through the mercy given to us, we are strong:

For our preaching is not about ourselves, but about Christ Jesus as Lord, and ourselves as your servants through Jesus.

But in everything making it clear that we are the servants of God, in quiet strength, in troubles, in need, in sorrow,

Seriously requesting us that they might have a part in this grace of being servants to the needs of the saints:

So it is no great thing if his servants make themselves seem to be servants of righteousness; whose end will be the reward of their works.

You put up with a man if he makes servants of you, if he makes profit out of you, if he makes you prisoners, if he puts himself in a high place, if he gives you blows on the face.

Are they servants of Christ? (I am talking foolishly) I am more so; I have had more experience of hard work, of prisons, of blows more than measure, of death.