In the power of God

An argument arose among them as to which one of them was the greatest. But Jesus, aware of their inner thoughts, took a little child and put it by his side, and said to them, “Whoever welcomes this child in my name welcomes me, and whoever welcomes me welcomes the one who sent me; for the least among all of you is the greatest.” John answered, “Master, we saw someone casting out demons in your name, and we tried to stop him, because he does not follow with us.” But Jesus said to him, “Do not stop him; for whoever is not against you is for you.”