I have heard (more than once I believe) that The Catholic Church is not perfect. I even read this in a Catholic school book and I believe I heard it from a Catholic priest. And The Catholic Church has made mistakes in the past, such as The Crusades, The Spanish Inquisition, and with Galileo (if my understanding of what happened at the time is correct). Therefore, don’t you think it shouldn’t be sinful to doubt The Catholic Church? But if it is a sin, is it be a grave matter or not a grave matter?
Doubting the teachings of Holy Mother Church is not a good thing, but I can’t think that it would be sinful, unless that doubt is somehow malicious in its nature. Ignorance is not something that is to your fault unless it is willful ignorance.
For example, let us say that you were raised in a house where they did not believe that Jesus was substantially present, body, blood, soul, and divinity in the Blessed Sacrament. Your doubt, even a lingering doubt of it after your conversion, could not be held against you. On the other hand, if you were raised in a faithful family and, for whatever malicious reason, decided that the Church’s teaching was false on that subject despite the efforts of learned and holy men to correct you, then that would be considered a heresy.
On the other hand, if you are ignorant of a subject and do not want to be taught, the principle of “invincible ignorance” would not apply either. Pope Pius IX related this concept well in his encyclical letter
Quanto Conficiamur Moerore (On Promotion of False Doctrines) August 10, 1863:
7. Here, too, our beloved sons and venerable brothers, it is again necessary to mention and censure a very grave error entrapping some Catholics who believe that it is possible to arrive at eternal salvation although living in error and alienated from the true faith and Catholic unity. Such belief is certainly opposed to Catholic teaching. There are, of course, those who are struggling with invincible ignorance about our most holy religion. Sincerely observing the natural law and its precepts inscribed by God on all hearts and ready to obey God, they live honest lives and are able to attain eternal life by the efficacious virtue of divine light and grace. Because God knows, searches and clearly understands the minds, hearts, thoughts, and nature of all, his supreme kindness and clemency do not permit anyone at all who is not guilty of deliberate sin to suffer eternal punishments.
There is a difference, though, between doubting the teachings of the Church and the actions taken by those who were charged with its stewardship. Honestly, the point of view of the historian who interprets the evidences of the event is a major factor in how that event is reported. There are a lot of events where, in my opinion, the Church has been given an unwarranted black eye or at least an eye that is damaged far more than it should have been.
Warren Carroll, founder of
Christendom College, has a multi-volume set of history texts known as the
History of Christendom. I would suggest taking a look at it when making decisions about the Church’s decisions and actions. Those texts may shine some new light on these events.