Deep in History
Understanding Catholicism
“To be deep in history is to cease to be a Protestant.”John Henry Newman, An Essay on the Development of Christian Doctrine (1878 edition), Introduction §5

A study guide for understanding Catholic teaching and talking about it kindly, written for someone raised Protestant. Each Teaching sets out the strongest objection first, then the Catholic reply.
Not sure where to start?
Four Teachings that the others build on, in this order:
- Sola Scriptura vs. Scripture & Tradition
- The Canon of Scripture (Why Catholic Bibles Have 73 Books)
- The Church Fathers (Who They Were and How to Cite Them)
- Papal Authority & Apostolic Succession
Progress shows where you're solid and where to study next. It is saved on this device only.