Luke 9:46-50

An argument started among them as to which of them might be the greatest. But Jesus, knowing what they were thinking in their heart, took a child and stood him by His side, and said to them, “Whoever receives this child in My name receives Me, and whoever receives Me receives Him who sent Me; for the one who is least among all of you, this is the one who is great.” John answered and said, “Master, we saw someone casting out demons in Your name; and we tried to prevent him because he does not follow along with us.” But Jesus said to him, “Do not hinder him; for he who is not against you is for you.”