Mt 18, 1-5
At this time the disciples came to Jesus and said, ‘Who is the greatest in the kingdom of Heaven?’ So he called a little child to him whom he set among them.Then he said, ‘In truth I tell you, unless you change and become like little children you will never enter the kingdom of Heaven. And so, the one who makes himself as little as this little child is the greatest in the kingdom of Heaven. Anyone who welcomes one little child like this in my name welcomes me.