At that time the disciples came to Jesus and asked, “Who is the greatest in the kingdom of heaven?”
He called a little child and had him stand among them. And he said: “I tell you the truth, unless you change and become like little children, you will never enter the kingdom of heaven. Therefore, whoever humbles himself like this child is the greatest in the kingdom of heaven. And whoever welcomes a little child like this in my name welcomes me.”
Matthew 18:1–5