Introduction

Whom should we call Christian and Catholic?

We call Christian and Catholic anyone who, having received the sacrament of baptism, professes the salutary doctrine of Jesus Christ, true God and true man, within the Catholic Church and does not adhere to any sect or opinion contrary to this Church.

What must a Christian know above all?

A Christian must above all know what pertains to faith, hope, charity, the sacraments, and the duties of Christian life.