Mark 9:38

Or again, some unbelievers, seeing that the name of Jesus was full of virtue, themselves used it, and performed signs, though they were unworthy of Divine grace; for the Lord wished to extend His name even by the unworthy.

He rebukes them for vilifying all but themselves; while they are striving which of them should be greatest, they will not allow those who are not in communion with them to be any thing. The account which John gave him, of the restraint they had laid upon one from making use of the name of Christ, because he was not of their society.

And perhaps there were many more such. Christ's grace is not tied to the visible church. (2.) It was strange that one who cast out devils in the name of Christ, did not join himself to the apostles, and follow Christ with them, but should continue to act in separation from them.

And John answered him, saying,....

We saw one casting out devils in thy name - It can scarcely be supposed that a man who knew nothing of Christ, or who was only a common exorcist, could be able to work a miracle in Christ’s name; we may therefore safely imagine that this was either one of John the Baptist’s disciples, who, at his master’s command, had believed in Jesus, or one of the seventy, whom Christ had sent out, Luk 10:1-7, who, after he had fulfilled his commission, had retired from accompanying the other disciples; but as he still held fast his faith in Christ, and walked in good conscience, the influence of his Master still continued with him, so that he could cast out demons as well as the other disciples.

We see in these verses, the mind of Christ on the great subject of TOLERATION in religion . The apostle John said to Jesus, "Teacher, we saw a man using your name to cast out demons, but we told him to stop because he isn't one of our group." The man was doing a good work without doubt. He was warring on the same side as the apostles, beyond question. But this did not satisfy John. He did not work in the company of the apostles. He did not fight in line with them. And therefore John had opposed him.

We see in these verses, the mind of Christ on the great subject of TOLERATION in religion . The apostle John said to Jesus, "Teacher, we saw a man using your name to cast out demons, but we told him to stop because he isn't one of our group." The man was doing a good work without doubt. He was warring on the same side as the apostles, beyond question. But this did not satisfy John. He did not work in the company of the apostles. He did not fight in line with them. And therefore John had opposed him. But let us hear now what the great Head of the church decides! "Don't stop him!" Jesus said. "No one who performs miracles in my name will soon be able to speak evil of me. Anyone who is not against us is for us." Here is a golden rule indeed, and one that human nature severely needs, and has too often forgotten. Men of all branches of Christ's Church are apt to think that no good can be done in the world, unless it is done by their own party and denomination. They are so narrow-minded, that they cannot conceive the possibility of working on any other pattern but that which they follow. They make an idol of their own peculiar ecclesiastical machinery, and can see no merit in any other. They are like him who cried when Eldad and Medad prophesied in the camp, "Moses, my master, make them stop!" (Num. 11:28.) To this intolerant spirit we owe some of the blackest pages of Church history. Christians have repeatedly persecuted Christians for no better reason than that which is here given by John. They have practically proclaimed to their brethren, "you shall either follow us, or not work for Christ at all." Let us be on our guard against this feeling. It is only too near the surface of all our hearts. Let us study to realize that liberal, tolerant spirit which Jesus here recommends, and be thankful for good works wheresoever and by whoever done.

We saw one ... - There is no improbability in supposing that this might have been one of the disciples of John, or one of the seventy whom Jesus had sent out, and who, though he did not “personally” attend on Jesus, yet had the power of working miracles. There is no evidence that he was merely an “exorcist,” or that he used the name of Jesus merely as a pretence.