Mark 9:33-39

³³And he came to Capernaum, and being in the house, he asked them, Of what were ye reasoning by the way?

³⁴And they remained silent, for by the way they had been reasoning with one another who was greatest.

³⁵And sitting down he called the twelve; and he says to them, If any one would be first, he shall be last of all, and minister of all.

³⁶And taking a little child he set it in their midst, and having taken it in his arms he said to them,

³⁷Whosoever shall receive one of such little children in my name, receives me; and whosoever shall receive me, does not receive me, but him who sent me.

³⁸And John answered him saying, Teacher, we saw some one casting out demons in thy name, who does not follow us, and we forbad him, because he does not follow us.

³⁹But Jesus said, Forbid him not; for there is no one who shall do a miracle in my name, and be able soon after to speak ill of me;