Catholicity does not differ from what you call the simple teachings of Jesus, although they were not so simple as you suppose. However, the Catholic Church teaches all that Christ taught, whether His teaching was explicit or implicit. Essentially she exists just as He would have her exist. There may have been many secondary developments during the ages, but they were all foreseen and approved by Christ. After all, Christ established a living Church, and a living Church grows. He likened it to a seed. Even as a boy grows into a man with exactly the same personality, yet with many secondary changes in size, knowledge, and manners, so too has the Church rightly developed.
Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer CartyBoost your faith with the help of the Catholic book we suggest below. It is a helpful resource that answers a lot of questions and can be shared with family and friends.
The Case for Catholicism - Answers to Classic and Contemporary Protestant Objections
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