Mark 10:42-45

And Jesus called them to him, and saith unto them, Ye know that they who are accounted to rule over the Gentiles lord it over them; and their great ones exercise authority over them. But it is not so among you: but whosoever would become great among you, shall be your minister; and whosoever would be first among you, shall be servant of all. For the Son of man also came not to be ministered unto, but to minister, and to give his life a ransom for many.