Mark 10:41-45 NIV

41 When the ten heard about this, they became indignant with James and John.
42 Jesus called them together and said, "You know that those who are regarded as rulers of the Gentiles lord it over them, and their high officials exercise authority over them.
43 Not so with you. Instead, whoever wants to become great among you must be your servant,1

References for Mark 10:43

44 and whoever wants to be first must be slave of all.
45 For even the Son of Man did not come to be served, but to serve,2 and to give his life as a ransom for many."3

References for Mark 10:45