The full original explanation of Christians only and the only Christians
Claim examined: Church identity and unity
Scriptural Answer
"This is true and it proves one thing--that not one earthly religion or church on the face of the earth can claim to be the true church of Jesus Christ." Faith, this is not true. Belief of and obedience to the Word of God is the difference between the church of Christ and the denominational world. Since the church for which Christ died (Acts 20:28) is not a denomination, and since God adds the saved to the church (Acts 2:47), and since all the saved are in the church, which is the body of Christ (Eph. 1:21-23), it is correct to say, "We are Christians only, and the only Christians." This claim is neither bigoted nor prejudicial. It is, on the other hand, respectful of truth (John 8:32). To imply that we are not the only Christians is to imply that there are Christians in all churches. To believe this, one would have to believe that one church is as good as another; and to believe this, one would have to deny that the Lord has only one church. The "only" Christians are those who have obeyed the gospel of Christ (Rom. 1:16-17; 1 Cor. 15:1-4), and "Christians only" means that we are not a part of the denominational world with its names, creeds, and doctrines.
KJV Scriptures Used
Read each passage in its chapter and compare the Scriptures together.