We should never let ourselves get like that. This passage, difficult as it is on the surface, is about discernment and the defence of the church. The gospel is so precious and Christ is so precious, every Christian must be a contender for the faith.
The cults have a different Christ. On the surface they talk about Christ but he is a different Christ because they have taken away his eternal deity, they have detracted from him, they have removed essential parts, so it is a different Christ and we have to be aware of that. These Corinthian heretics said, ‘I believe entirely in Christ Jesus’ but you can’t find your way to heaven entirely by Christ,’ they would say, ‘he isn’t enough. You have got to obey the ceremonial law of the Jews at the same time. It has got to be some works and some grace.’ That is a different Christ. The true Christ is all Christ. We can contribute nothing to salvation. He must suffer and die to bear the punishment due to us for our sin. He must do everything for us and we depend entirely upon him.