Luke 9:43-50

And they were all astonished at the majesty of God. But while all were marvelling at all the things which he did, he said unto his disciples, Let these words sink into your ears: for the Son of man shall be delivered up into the hands of men. But they understood not this saying, and it was concealed from them, that they should not perceive it; and they were afraid to ask him about this saying. And there arose a reasoning among them, which of them was the greatest. But when Jesus saw the reasoning of their heart, he took a little child, and set him by his side, and said unto them, Whosoever shall receive this little 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 is great. And John answered and said, Master, we saw one casting out demons in thy name; and we forbade him, because he followeth not with us. But Jesus said unto him, Forbid him not: for he that is not against you is for you.