Mark 9:36

34But they were silent, for they had disputed with one another on the way about who was the greatest.

35He sat down and called the twelve; and he said to them, “If any man wants to be first, he shall be last of all, and servant of all.”

36He took a little child and set him in the middle of them. Taking him in his arms, he said to them,

37“Whoever receives one such little child in my name receives me; and whoever receives me, doesn’t receive me, but him who sent me.”

38John said to him, “Teacher, we saw someone who doesn’t follow us casting out demons in your name; and we forbade him, because he doesn’t follow us.”