Matthew 23:11

And the greater of you shall be your ministrant,

Galatians 5:13

For ye -- to freedom ye were called, brethren, only not the freedom for an occasion to the flesh, but through the love serve ye one another,

Matthew 20:26-27

but not so shall it be among you, but whoever may will among you to become great, let him be your ministrant;

Mark 10:43-44

but not so shall it be among you; but whoever may will to become great among you, he shall be your minister,

Luke 22:26-27

but ye are not so, but he who is greater among you -- let him be as the younger; and he who is leading, as he who is ministering;

John 13:14-15

if then I did wash your feet -- the Lord and the Teacher -- ye also ought to wash one another's feet.

1 Corinthians 9:19

for being free from all men, to all men I made myself servant, that the more I might gain;

2 Corinthians 4:5

for not ourselves do we preach, but Christ Jesus -- Lord, and ourselves your servants because of Jesus;

2 Corinthians 11:23

ministrants of Christ are they? -- as beside myself I speak -- I more; in labours more abundantly, in stripes above measure, in prisons more frequently, in deaths many times;

Philippians 2:5-8

For, let this mind be in you that is also in Christ Jesus,

Treasury of Scripture Knowledge

Summary

But he that is greatest among you shall be your servant.

Bible References

General references

Matthew 20:26
but not so shall it be among you, but whoever may will among you to become great, let him be your ministrant;
Mark 10:43
but not so shall it be among you; but whoever may will to become great among you, he shall be your minister,
Luke 22:26
but ye are not so, but he who is greater among you -- let him be as the younger; and he who is leading, as he who is ministering;
John 13:14
if then I did wash your feet -- the Lord and the Teacher -- ye also ought to wash one another's feet.
1 Corinthians 9:19
for being free from all men, to all men I made myself servant, that the more I might gain;
2 Corinthians 4:5
for not ourselves do we preach, but Christ Jesus -- Lord, and ourselves your servants because of Jesus;
2 Corinthians 11:23
ministrants of Christ are they? -- as beside myself I speak -- I more; in labours more abundantly, in stripes above measure, in prisons more frequently, in deaths many times;
Galatians 5:13
For ye -- to freedom ye were called, brethren, only not the freedom for an occasion to the flesh, but through the love serve ye one another,
Philippians 2:5
For, let this mind be in you that is also in Christ Jesus,