Mark 9:33-39

³³But they held their peace, for in the way they had disputed among themselves, which of them should be the greatest.

³⁴And sitting down, he called the twelve, and saith to them: If any man desire to be first, he shall be the last of all, and the minister of all.

³⁵And taking a child, he set him in the midst of them. Whom when he had embraced, he saith to them:

³⁶Whosoever shall receive one such child as this in my name, receiveth me. And whosoever shall receive me, receiveth not me, but him that sent me.

³⁷John answered him, saying: Master, we saw one casting out devils in thy name, who followeth not us, and we forbade him.

³⁸But Jesus said: Do not forbid him. For there is no man that doth a miracle in my name, and can soon speak ill of me.

³⁹For he that is not against you, is for you.