Mark 9:33–37
Who Is the Greatest?
[33] And they came to Capernaum. And when he was in the house he asked them, “What were you discussing on the way?” [34] But they kept silent, for on the way they had argued with one another about who was the greatest. [35] And he sat down and called the twelve. And he said to them, “If anyone would be first, he must be last of all and servant of all.” [36] And he took a child and put him in the midst of them, and taking him in his arms, he said to them, [37] “Whoever receives one such child in my name receives me, and whoever receives me, receives not me but him who sent me.”
(ESV)