Do I have to believe Mary was sinless to be a Catholic?

[msm]

Does a person have to believe that Mary was sinless to be a Catholic? Can I be a Catholic if I cannot bring myself to believe that teaching?

 

[Michelle_Arnold]

A Catholic must believe all that the Church proposes to him for belief. Since the Immaculate Conception is a de fide dogma of the Church, yes, you must believe it in order to be a Catholic in good faith. In his promulgation of the dogma, Pope Pius IX stated:

Accordingly, by the inspiration of the Holy Spirit, for the honor of the holy and undivided Trinity, for the glory and adornment of the Virgin Mother of God, for the exaltation of the Catholic faith, and for the furtherance of the Catholic religion, by the authority of Jesus Christ our Lord, of the blessed apostles Peter and Paul, and by our own: We declare, pronounce, and define that the doctrine which holds that the most Blessed Virgin Mary, in the first instance of her conception, by a singular grace and privilege granted by Almighty God, in view of the merits of Jesus Christ, the Savior of the human race, was preserved free from all stain of original sin, is a doctrine revealed by God and therefore to be believed firmly and constantly by all the faithful (Ineffabilis Deus, source).

British writer and convert G. K. Chesterton once had a similar problem to yours. He wanted to be a Catholic but could not understand the Church’s position on the celibate chastity of priests and religious. Finally, he came to the conclusion that if there was a difference of opinion between the Church and himself, the Church by virtue of its two thousand years of growth and spiritual maturation was more likely to be right than he. In other words, if thousands of years worth of Catholic theologians, spiritual writers, and authoritative teachers found value and necessity to the discipline of celibate chastity for priests and religious, then the fault in understanding was more likely to be his own. He submitted his lack of understanding to the Church’s greater wisdom, accepted the teaching on faith, and became Catholic.

I encourage you to study the issue of Mary’s Immaculate Conception (the links below may help), but I also encourage you to consider G. K. Chesterton’s example. Sometimes we accept certain teachings on faith, even though we cannot as yet fully understand them. If you are able to say in good conscience, “I do not understand how Mary could have been sinless, but I trust that the Church is wiser than I and will believe despite my lack of understanding,” then you can become Catholic. Eventually, you may be surprised to find that you come to understand the Church’s teaching. This phenomenon was captured by St. Augustine with the following exhortation:

Seek not to understand that you may believe, but believe that you may understand.

Recommended reading:

Immaculate Conception and Assumption
Mary: Full of Grace
Ark of the New Covenant by Patrick Madrid
CRI’s Attack on Mary: Part II by Fr. Mateo
How to Defend the Immaculate Conception by Jason Evert
What Is Truth? by Michelle Arnold