Matthew 20:27

and whosoever will be first, let him be your slave.

Matthew 18:4

Whosoever therefore shall humble himself, as this little child, he shall be greatest in the kingdom of heaven.

Mark 9:33-35

And he came to Capernaum: and when he was in the house, he asked them, What was the subject of your dispute among yourselves on the road?

Luke 22:26

But ye shall not act thus: but the superior among you, let him be as the junior; and he that presideth, as he that serveth.

Acts 20:34-35

but ye yourselves know that these hands have by labour furnished necessaries for my own wants, and for those who were with me.

Romans 1:14

Both to the Greeks and barbarians, both to the wise and the ignorant am I a debtor.

1 Corinthians 9:19-23

For though I be free from all men, I have made myself the servant of all, that I might 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

For I reckon myself to be nothing inferior to the very chief of the apostles.

2 Corinthians 11:23-27

Are they the ministers of Christ? (I speak foolishly) I am above [them]: in labours more abundantly, in stripes exceedingly more, in prisons more frequently, in the most immediate danger of death often.

2 Corinthians 12:15

And I will most cheerfully spend and be spent for your souls, though the more abundantly I love you, the less I am 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
But he who is greatest among you shall be your servant.
Luke 22:25
And he said to them, The kings of the Gentiles lord it over them; and they who exercise authority over them are called benefactors.
Philippians 2:5
Let the same sentiment of mind be in you, which was also in Christ Jesus: