This is a most important question anybody can ask. Am I a Christian? Or am I a Christian in name only? Do I have a living relationship with Christ? Well then, who has the right to call himself Christian? Like the Jews of old, people still fool themselves in thinking that they are right with God because of some ritual (like circumcision or baptism) or because of their heritage ("I was born into a Christian family and attend a Christian church").
According to the Bible, a true Christian is chosen by God before the foundation of the world, redeemed and forgiven by the blood of Christ, illuminated by the Spirit, knows and obeys the truth of the Gospel. A Christian is someone who trusts in Christ for his salvation, and gives all praise to God for His grace. (Please read Ephesians 1:3-13).
Does a Roman Catholic fit this description? Superficially he does. He believes in Christ and speaks about the grace of God. But if he follows the official teaching of the Roman Catholic Church, regretfully I must say that he does not really believe in Christ nor does he know the grace of God. Please allow me to explain.