Mark 10:42 Jesus called them together and said, "You know that those who are regarded as   rulers of the Gentiles lord it over them, and their high officials exercise authority over them.   43 Not so with you. Instead, whoever wants to become great among you must be your   servant, 44 and whoever wants to be first must be slave of all. 45 For even the Son of Man   did not come to be served, but to serve, and to give his life as a ransom for many."

 1 Peter 5:1 To the elders among you, I appeal as a fellow elder, a witness of Christ's   sufferings and one who also will share in the glory to be revealed: 2 Be shepherds of God's   flock that is under your care, serving as overseers-- not because you must, but because you   are willing, as God wants you to be; not greedy for money, but eager to serve; 3 not lording   it over those entrusted to you, but being examples to the flock. 4 And when the Chief   Shepherd appears, you will receive the crown of glory that will never fade away.