Jesus has just told his disciples, for the second time in this chapter, that he is going to be handed over and killed. Their response is to argue about which of them is the greatest. 46"An argument arose among them as to which of them was the greatest." Luke does not say what set it off, as if the cause hardly matters beside how badly timed it is. Jesus is walking toward a cross, and his closest followers are ranking themselves.
Jesus answers 47"knowing the reasoning of their hearts," with a small object lesson in place of a lecture. He 47"took a child and put him by his side." In that world children had almost no status, no wealth, no influence, and nothing to offer an ambitious adult. Jesus places exactly that kind of person at the center of the argument about greatness. 48"Whoever receives this child in my name receives me, and whoever receives me receives him who sent me." Welcoming someone with nothing to offer in return is the same as welcoming Jesus, and welcoming Jesus is the same as welcoming the Father. The chain runs from the least impressive person in the room to God, with nothing lost in the connection.
Then comes the paradox: 48"he who is least among you all is the one who is great." It is a truth meant to be lived inside. The kingdom's arithmetic runs backward from every instinct that had just produced an argument about rank. Greatness here is measured by how low a person will go to welcome those who cannot pay them back.
John's confession, right after, shows how far the disciples still are from living that lesson. 49"we saw someone casting out demons in your name, and we tried to stop him, because he does not follow with us." The man was doing effective ministry in Jesus' own name, and John's objection concerns the fact that the man was not part of their group. The instinct that produced an argument about rank inside the circle now produces a wish to police the boundary from outside.
Jesus' answer is short and wide. 50"Do not stop him, for the one who is not against you is for you." He asks only whether the work is opposed to him or aligned with him, and refuses to let John's sense of group ownership decide who may serve in his name. The temptation is old. Two men named Eldad and Medad once prophesied in Israel's camp without going out to the tent with the rest of the elders, and Joshua begged Moses to stop them. Moses answered, "Would that all the LORD's people were prophets" (Numbers 11:29). The impulse to police who serves God is old, and so is God's answer to it.
Two lessons, back to back, aimed at the same root. The disciples want to know who ranks highest inside their circle and who counts as legitimately in it. Jesus answers both by refusing the framework of rank and boundary they were using and replacing it with something simpler. Welcome whoever comes in his name, whether a powerless child or a stranger casting out demons outside your group, and let the welcome be the measure of greatness.
Where have you been keeping score, and whom have you been keeping out? Make yourself least there this week.
Prayer
Father, forgive us the arguments about our own rank and standing, even while your Son was walking toward a cross for us. Teach us to welcome the powerless as we would welcome you, and to celebrate good work done in your name even when it comes from outside every circle we consider our own. Make us least, so that by your strange arithmetic we might be great. In Jesus' name, amen.