Mark 9:35
35 And he sat down and called the twelve. And he said to them, o“If anyone would be first, he must be last of all and servant of all.”
Mark 10:42–44
42 And Jesus called them to him and said to them, “You know that those who are considered rulers of the Gentiles lord it over them, and their great ones exercise authority over them. 43 But it shall not be so among you. hBut whoever would be great among you must be your servant,1 44 and whoever would be first among you must be slave2 of all.