Matthew 20:27

No, whoever wants to become great among you must be your servant, and whoever wants to take the first place among you, must be your slave;

Matthew 18:4

Therefore, any one who will humble himself like this child-- that man shall be the greatest in the Kingdom of Heaven.

Mark 9:33-35

They came to Capernaum. When Jesus had gone into the house, he asked them: "What were you discussing on the way?"

Luke 22:26

But with you it must not be so. No, let the greatest among you become like the youngest, and him who leads like him who serves.

Acts 20:34-35

You, yourselves, know that these hands of mine provided not only for my own wants, but for my companions also.

Romans 1:14

I have a duty to both the Greek and the Barbarian, to both the cultured and the ignorant.

1 Corinthians 9:19-23

Although I was entirely free, yet, to win as many converts as possible, I made myself everyone's slave.

2 Corinthians 4:5

(For it is not ourselves that we proclaim, but Christ Jesus, as Lord, and ourselves as your servants for Jesus' sake.)

2 Corinthians 11:5

I do not regard myself as in any way inferior to the most eminent Apostles!

2 Corinthians 11:23-27

Are they 'Servants of Christ'? Though it is madness to talk like this, I am more so than they! I have had more of toil, more of imprisonment! I have been flogged times without number. I have been often at death's door.

2 Corinthians 12:15

For my part, I will most gladly spend, and be spent, for your welfare. Can it be that the more intensely I love you the less I am to be loved?

Treasury of Scripture Knowledge

Summary

And whosoever will be chief among you, let him be your servant:

Bible References

General references

Matthew 23:11
The man who would be the greatest among you must be your servant.
Luke 22:25
Jesus, however, said: "The kings of the Gentiles lord it over them, and their oppressors are styled 'Benefactors.'
Philippians 2:5
Let the spirit of Christ Jesus be yours also.