9:38-40 Immediately after the disciples had been taught a lesson on humility—on welcoming those without status—John said to the Master that they had seen someone casting out devils in his name, but the man was not one of them and they had forbidden him to continue. Now he wonders if they did the right thing. Could someone work in Jesus' name without being a true disciple?
Jesus answered, Forbid him not. This man, who had so much faith in Jesus and was able to do a miracle in his name, would not likely speak evil of him or oppose him. For he that is not against us is for us. If it's the mission that's important, then those who participate in that mission must be welcomed, even if they are slightly unorthodox. There are many opportunities to do God's work.
9:41-42 Next is a series of maxims involving discipleship. Hospitality was essential in the ancient world. But to offer someone a cup of water to drink in Jesus' name, because he belongs to Christ, would be an acknowledgment of the Christ, a token of faith and obedience. Even the smallest act of service would be noticed, and the giver would not lose his reward from God, the Father.
