Among the Reformed churches, eventually three marks were identified: faithful preaching of the Word, faithful administration of the sacraments, and faithful exercise of discipline. In focusing on the marks of the church, the Reformers were not saying that all a good church needs to have are the marks of the church. They focused on the marks because the marks make the true church recognizable. The church of Christ has many more characteristics than the three marks. But these characteristics—we might mention prayer, fellowship, devotion—are not so easy to observe. The marks are important because they display the faithfulness of the church.

If you move to a new town, you have to find a new church. The search for a new church can be difficult and frustrating. If you pick up the Yellow Pages and look under “church,” you are likely to confront a bewildering array of possibilities. Perhaps you already have some fairly definite ideas of what you want in a church. You may be looking for a good youth group or active senior citizens group. You may want a powerful preacher or a certain kind of music. You may be very loyal to one denomination or you may like to “shop around.”

What should you be looking for in choosing a new church? Your first concern should be that the church be a “true church.” You do not want to choose a church that is part of a sect or a cult. You do not want a church that still bears the name of church, but whose lampstand Christ has removed (Rev. 1–3). How do you recognize a true church? This question was acute at the time of the Reformation. The Roman Catholic Church in the sixteenth century basically argued that Christ preserved the true church through the work of the pope, the bishop of Rome. The true church is easy to recognize because it is in fellowship with the pope. Any church that does not submit to the pope is a false church.

The Reformers did not accept Rome’s approach. They argued that the true church is not marked by submission to a supposedly infallible apostolic office—the Papacy—but by acceptance of apostolic truth. Luther declared that “the sole, uninterrupted, infallible mark of the church has always been the Word.” The true church is marked by submission to the Scriptures.

Anyone familiar with the Reformation knows the importance of the Bible in the formation of Protestantism. Against the claims of the medieval church that tradition, bishops, and councils were authoritative along with the Bible, the Reformers insisted that the Bible is the only absolute authority for Christians. The Bible must judge all traditions and church officers and assemblies. It is not surprising then that the Reformers taught that the centrality of the Word is the key mark of the true church. As one of the Reformation confessions put it, the true church is known “in short, if all things are managed according to the pure Word of God, all things contrary thereto rejected, and Jesus Christ acknowledged as the only Head of the Church” (Belgic Confession, Article 29).

This general recognition of the Word as the mark of the true church came to specific expression. Among the Reformed churches, eventually three marks were identified: faithful preaching of the Word, faithful administration of the sacraments, and faithful exercise of discipline.

In focusing on the marks of the church, the Reformers were not saying that all a good church needs to have are the marks of the church. They focused on the marks because the marks make the true church recognizable. The church of Christ has many more characteristics than the three marks. But these characteristics—we might mention prayer, fellowship, devotion—are not so easy to observe.

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