Mark 10:42-45

But Jesus called them together, and said, “You know that those who are appointed to rule over the Gentiles lord it over them, and their great ones exercise authority over them. But it shall not be so among you. Whoever would be great among you must be your servant, and whoever among you would be greatest must be servant of all. For even the Son of Man came not to be served, but to serve, and to give His life as a ransom for many.”