The Roman Catholic Church says the Bible, by itself, does not cover the whole field of revelation and that it has been supplemented by the teachings and decisions of the “Holy Mother Church,” and the Pope as the “Vicar of Christ. The Roman Catholic Church has an unbiblical understanding of justification. This can be seen in the following quotations from the Catechism of the Catholic Church, which asserts (1) that justification is initially granted to an individual through baptism; (2) that justification is maintained through the sacraments of the church; and (3) that justification ultimately depends on the obedience of man by which he merits eternal life. Thus, by Scriptural standards, the Roman Catholic Church is a false church that can only expect God's judgment, not a true church that can claim God's blessing.
With that in mind, when witnessing to Catholics the evangelist is presented with a number of areas of concern: salvation through faith by grace alone, salvation in Christ alone, the Virgin Mary, purgatory, and that the Apocryphal books have been added to Bible. Catholicism is fairly easy to expose as a cult, it is getting people to forsake their family and church traditions that is most difficult. The hardest part of soul-winning is not getting people saved, it is getting them lost. The evangelist must be delicate with his approach of Catholics with the