Matthew 20:27

And whoever will be first among you, let him be your servant;

Matthew 18:4

Whoever, therefore, humbles himself as this little child, is greatest in the kingdom of heaven.

Mark 9:33-35

And he came into Capernaum; and when he was in the house, he asked them: What were you disputing about among yourselves along the road?

Luke 22:26

But you shall not be so; but let the greatest among you be as the younger, and him that is chief, as he that serves.

Acts 20:34-35

You yourselves know that these hands have ministered to my necessities, and to those who were with me.

Romans 1:14

I am a debtor both to the Greeks and to the barbarians; both to the wise and to the unwise.

1 Corinthians 9:19-23

For, though I am free from all men, yet have I made my self a servant to all, that I may gain the more.

2 Corinthians 4:5

For we preach not ourselves, but Christ Jesus the Lord, and ourselves your servants, for Jesus sake.

2 Corinthians 11:5

I count myself indeed to be in no respect inferior to the very greatest of the apostles.

2 Corinthians 11:23-27

Are they ministers of Christ? (I say it foolishly,) I am above them. In labors more abundant, in stripes above measure, in prisons more frequent, in deaths often.

2 Corinthians 12:15

I, indeed, will most gladly spend and be spent for your souls; though the more abundantly I love you, the less I 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
And the greatest among you shall be your minister.
Luke 22:25
And he said to them: The kings of the nations have dominion over them, and those who exercise authority over them are called benefactors.
Philippians 2:5
Let this mind be in you, which was also in Christ Jesus,