Matthew 20:27

and whoever wants to hold first position among you must be your slave,

Matthew 18:4

So then, whoever becomes as lowly as this little child is the greatest in the kingdom of heaven,

Mark 9:33-35

Then they reached Capernaum. When He got home, He asked them, "What were you discussing on the way home?"

Luke 22:26

But you are not to do so. On the contrary, the greatest among you must be like the youngest and the leader as the servant.

Acts 20:34-35

You know yourselves that these hands of mine provided for my own needs and for my companions.

Romans 1:14

To Greeks and to all the other nations, to cultured and to uncultured people alike, I owe a duty.

1 Corinthians 9:19-23

Yes, indeed, though I am free from any human power, I have made myself a slave to everybody, to win as many as possible.

2 Corinthians 4:5

For I am not proclaiming myself but Christ Jesus as Lord, and myself a slave of yours for Jesus' sake.

2 Corinthians 11:5

For I consider myself not a single bit inferior to those surpassingly superior apostles of yours!

2 Corinthians 11:23-27

Are they ministers of Christ? So am I. I am talking like a man that has gone crazy -- as such I am superior! -- serving Him with labors greater by far, with far more imprisonments, with floggings vastly worse, and often at the point of death.

2 Corinthians 12:15

So in my own case, I will most happily spend my money and myself for your sakes. If I love you much more than I love others, am I to be loved less by you?

Treasury of Scripture Knowledge

Summary

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

Bible References

General references

Matthew 23:11
Whoever is greatest among you must be your servant.
Luke 22:25
But He said to them, "The kings of the heathen lord it over them and those who exercise authority over them are given the title of 'Benefactor.'
Philippians 2:5
Keep on fostering the same disposition that Christ Jesus had.