R.C. Sproul says if a church is not evangelical, it is not an authentic church.
When we consider the predicament that the evangelical church of the twenty-first century faces in America, the first thing we need to understand is the very designation “evangelical church” is itself a redundancy. If a church is not evangelical, it is not an authentic church. The redundancy is similar to the language that we hear by which people are described as “born-again Christians.” If a person is born again of the Spirit of God, that person is, to be sure, a Christian. If a person is not regenerated by the Holy Spirit, he may profess to be a Christian, but he is not an authentic Christian. There are many groups that claim to be churches that long ago repudiated the evangel, that is, the gospel. Without the gospel, a gathering of people, though they claim otherwise, cannot be an authentic church.
In the sixteenth century, the term evangelical came into prominence as a description of the Protestant church. In many cases, the terms evangelical and Protestant were used interchangeably. Today, that synonymous use of the adjectives no longer functions with any accuracy. Historic Protestants have forgotten what they were protesting in the sixteenth century. The central protest of the Reformation church was the protest against the eclipse of the gospel that had taken place in the medieval church.
When we turn our attention to the first century, to the churches about which we learn from the biblical record, we know that all of the churches addressed in the New Testament, including the churches in Ephesus, Corinth, Thessalonica, and the seven churches of Revelation, were evangelical churches. They all embraced the biblical gospel. Yet at the same time, these churches were different in their strengths, in their weaknesses, and in their compositions. An evangelical church is not necessarily a monolithic community. There may be unity among evangelical churches but not necessarily uniformity. The distinctions of the seven churches of Revelation are set forth clearly in that book. They manifest different greatnesses and frailties, but they all faced perils. Each confronted the dangers that assaulted the church in the first century. They faced hazards of varying proportions, but there was a common threat to the health of the New Testament church from many sides. Those dangers manifested in the first century are repeated in every age of the church. They certainly loom large at our time in the early years of the twenty-first century.