Luke 9:45-49

But they understood not this saying, and it was hid from them, that they perceived it not: and they feared to ask him of that saying.

Then there arose a reasoning among them, which of them should be greatest.

And Jesus, perceiving the thought of their heart, took a child, and set him by him,

And said unto them, Whosoever shall receive this child in my name receiveth me: and whosoever shall receive me receiveth him that sent me: for he that is least among you all, the same shall be great.

And John answered and said, Master, we saw one casting out devils in thy name; and we forbad him, because he followeth not with us.