Mark 9:38-40

38John said to Jesus, ‘Teacher, we saw a man who was causing bad spirits to go out of people. He was using your authority to do it. But he is not in our group. So we told him that he must not do it.’

39‘Do not tell him to stop,’ Jesus said. ‘That man is using my authority to do powerful things. Someone who does that cannot immediately say anything bad about me.

40If someone is not against us, he is working to help us.