Whereas persecution often ends up helping the church by advancing the gospel, heresy always harms the church and hurts its ministry. Christians long for peace in the church, and rightly so. Our Lord Jesus prayed that his people would be united with him, with the Father, and with one another (see John 17). However, anyone who believes that doctrinal unity can be achieved without a struggle understands neither the history of the church nor the teaching of Scripture. It is not enough to say, “Why don’t
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