The Catechism is part of the Church’s official teaching in the sense that it was suggested by a Synod of Bishops, requested by the Holy Father, prepared and revised by bishops and promulgated by the Holy Father as part of his ordinary Magisterium. Pope John Paul II ordered the publication of the Catechism by the Apostolic Constitution, Fidei Depositum, on October 11, 1992. An apostolic constitution is a most solemn form by which popes promulgate official Church documents. The new Code of Canon Law, for example, was promulgated by the Apostolic Constitution, Sacrae Disciplinae Leges. In Fidei Depositum, Pope John Paul II said, “The Catechism of the Catholic Church, which I approved June 25th last and the publication of which I today order by virtue of my Apostolic Authority, is a statement of the Church’s faith and of catholic doctrine, attested to or illumined by Sacred Scripture, the Apostolic Tradition, and the Church’s Magisterium. I declare it to be a sure norm for teaching the faith and thus a valid and legitimate instrument for ecclesial communion.” John Paul II also stated that the Catechism “is given as a sure and authentic reference text for teaching Catholic doctrine.”
It’s all relevant and current up-to-date Church teaching. We are to believe and practice everything that the Catechism teaches us. Refusing to do so can be a sin.
