A Path for Protestants

An open Bible

“…that they may all be one; even as thou, Father, art in me, and I in thee, that they also may be in us, so that the world may believe that thou hast sent me.”

John 17:21

We share a creed, a baptism, and a Lord who prayed that we would be one. What divides us is a short list of questions — and the list has a structure. Nearly every dispute between Protestants and the Catholic Church runs back, sooner or later, to one prior question: what is the rule of faith? Settle how that question is answered, and the canon, the Church, justification, and the sacraments each fall into a different light.

So this path does not start with Mary or purgatory, the places where Catholic practice looks strangest from the outside. It starts where the logic starts, and saves the distinctives for when the groundwork can carry them. That is also, for what it is worth, the order in which most converts from Protestantism say the questions actually fell for them.

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Eleven Stops, in Order

Each stop builds on the ones before it. The one-line notes say why.

  1. Is Sola Scriptura Scriptural? — the rule of faith: the question every other question depends on.
  2. Why Do Catholic Bibles Have More Books? — the immediate test case: the Bible’s table of contents is not in the Bible.
  3. One Church, or Many? — what Jesus actually founded, and how you would recognize it.
  4. Apostolic Succession — whether the apostles left successors, from Scripture and the earliest records.
  5. Peter and the Papacy — the keys, the rock, and what Vatican I actually defined, conditions and all.
  6. Is Sola Fide True? — justification: Paul and James read together instead of against each other.
  7. Can You Know You Are Saved? — the pastoral sequel to sola fide, and what Trent actually condemned.
  8. Symbols, or Sacraments? — whether “baptism now saves you” means what it says.
  9. Literal Body and Blood? — John 6, the Last Supper, and what the first Christians believed they were receiving.
  10. The Blessed Virgin — now, with authority and sacraments settled, the Marian doctrines examined from Scripture.
  11. Is Purgatory Scriptural? — the final purification, and the prayer for the dead the early Church never stopped praying.

Side-trips as they interest you: Should Babies Be Baptized? after the sacraments stop, The Communion of Saints and What About Graven Images? alongside Mary, and What About Indulgences? after purgatory. And when you are curious what the Mass actually is from the inside, Your First Mass will walk you through one.

Summary

Start with the rule of faith, because every other question inherits its answer: sola scriptura, then the canon that tests it. Then the Church, the succession, and Peter; then justification and assurance; then the sacraments and the Eucharist. Mary and purgatory come last, not because they matter least but because they only make sense once the question of authority is settled — which is the order the questions actually fell in for most who have walked this road.

Next: Is Sola Scriptura Scriptural?