It is interesting to speculate what the church would be like today if Martin Luther had been prone to compromise. The pressure was heavy on him to tone down his teaching, soften his message, stop poking his finger in the eye of the papacy. Even many of his friends and supporters urged Luther to come to terms with Rome for the sake of harmony in the church. Luther himself prayed earnestly that the effect of his teaching would not be divisive.

When he nailed his 95 Theses to the door, the last thing he wanted to do was split the church.

Yet sometimes division is fitting, even healthy, for the church. Especially in times like Luther’s—and like ours—when the visible church seems full of counterfeit Christians, it is right for the true people of God to declare themselves. Compromise is sometimes a worse evil than division…

John MacArthur at (Pulpit Magazine)