Mark 9:34-37

But the followers did not answer, because their argument on the road was about which one of them was the greatest. Jesus sat down and called the twelve apostles to him. He said, “Whoever wants to be the most important must be last of all and servant of all.” Then Jesus took a small child and had him stand among them. Taking the child in his arms, he said, “Whoever accepts a child like this in my name accepts me. And whoever accepts me accepts the One who sent me.”