Matthew 7:22

Many will say to me in that day, Lord, Lord, did we not prophesy by thy name, and by thy name cast out demons, and by thy name do many mighty works?

The fact that "many" such persons exist identifies them as followers of the broad way. The religious nature of their errors is emphasized by their prophesying, casting out demons, and doing many mighty works in Christ's name. What was wrong with all this? They did those mighty works in Christ's name but without his authority or sanction. No one can doubt that this is exactly the situation with reference to the vast majority of religious actions today practiced in the world. They are done in Jesus' name, but not by his authority. This means, simply, that the things done were not commanded by Christ. What is the projected result of such conduct? See next verse.