Matthew 20:27

and whoever wants to be most prominent among you must be your slave--

Matthew 18:4

Therefore whoever humbles himself like this child, this person is the greatest in the kingdom of heaven,

Mark 9:33-35

And they came to Capernaum. And [after he] was in the house, he asked them, "What were you discussing on the way?"

Luke 22:26

But you [are] not [to be] like this! But the one who is greatest among you must become like the youngest, and the one who leads like the one who serves.

Acts 20:34-35

You yourselves know that these hands served [to meet] my needs and [the needs of] those who were with me.

Romans 1:14

I am under obligation both to Greeks and to barbarians, both to the wise and to the foolish.

1 Corinthians 9:19-23

For [although I] am free from all [people], I have enslaved myself to all, in order that I may gain more.

2 Corinthians 4:5

For we do not proclaim ourselves, but Christ Jesus [as] Lord, and ourselves [as] your slaves for the sake of Jesus.

2 Corinthians 11:5

For I consider myself in no way to be inferior to the preeminent apostles.

2 Corinthians 11:23-27

Are they servants of Christ?--I am speaking as though I were beside myself--I [am] more so, with far greater labors, with far more imprisonments, with beatings to a much greater degree, in [danger of] death many times.

2 Corinthians 12:15

But I will spend and be expended most gladly for your lives. If I love you much more, am I to be loved less?

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 will be your servant.
Luke 22:25
So he said to them, "The kings of the Gentiles lord it over them, and those who have authority over them are called benefactors.
Philippians 2:5
Think this in yourselves which [was] also in Christ Jesus,