Matthew 20:27 KJV
And whosoever will be chief among you, let him be your servant:
Matthew 20:27, King James Version
In context
26 But it shall not be so among you: but whosoever will be great among you, let him be your minister;
27 And whosoever will be chief among you, let him be your servant:
28 Even as the Son of man came not to be ministered unto, but to minister, and to give his life a ransom for many.