Mark 9:33-35

33And they came to Capernaum: and when he was in the house he asked them, What were ye reasoning on the way? 34But they held their peace: for they had disputed one with another on the way, who was the greatest. 35And he sat down, and called the twelve; and he saith unto them, If any man would be first, he shall be last of all, and servant of all.