The Great Mystery Marriage Formation


A practical approach to marriage formation based in sound human psychology and faithful theology.

About The Great Mystery

Despite our unprecedented connectivity through technology, many of us feel increasingly isolated and alone. This disconnect stems from a fundamental misunderstanding of who we are and what we are meant for, leaving us ill-equipped to cultivate thriving relationships. 

How, then, can we expect couples to have strong marriages?

What we truly need in this day and age is not just knowledge about relationships and marriage but a comprehensive formation that equips us with the tools to build and sustain fruitful connections.

The Great Mystery is a groundbreaking initiative designed to bridge this gap. Existing marriage preparation programs, while valuable in their own right, often focus either on practical or theological aspects of marriage but fail to integrate the two into a holistic formation program. "The Great Mystery" fills this void by offering a comprehensive approach to understanding and living out the true meaning of marriage.


Order the Book

Order the Couple's Guide

"We firmly believe The Great Mystery was the best program to prepare us for our marriage. It gave us the opportunity to better understand ourselves, each other, and most importantly, our faith, in order to prepare us for this beautiful Sacrament."

- Cullen and Andrea

We Need Your Support

Our journey began with the publication of the first edition of a book and a couples' guide, both of which are available on Amazon. We are also currently working on developing and validating a couples' inventory that will further enhance the effectiveness of our program. In the near future, we plan to introduce a facilitator formation program to expand our reach and impact.


We invite you to join us on this exciting journey of rediscovering the beauty and purpose of marriage in today's world. 


Your support, whether financial or through following our progress, will help us continue to develop and deliver this vital program to couples seeking meaningful and enduring relationships.


Support the Great Mystery

What Couples are Saying about The Great Mystery

"Dr. Delaney presents the matters of both faith and marriage in a way that goes far beyond skin-deep while still retaining the accessibility of the material to the beginner. We gained a deeper understanding of the covenant into which we were preparing to enter and felt armed with practical tips and advice to face the daily and worldly challenges every husband and wife face. We cannot recommend highly enough The Great Mystery to every couple, whether they be preparing for marriage or simply looking to strengthen their relationship after years of being together."

- William and Rebekah

"Not only did we look forward to and enjoy our sessions, but we were also filled with new revelations. We learned so much about each other, and every session we came away with takeaways and new insights about each other. It gave us a foundation from which we will continue to build upon as we grow as a married couple. We highly recommend this program to all couples looking to grow closer together and deepen your relationship with God together. All the material is extremely relevant and pertinent to everyday life. It was remarkable how God worked in us throughout this time, and day-to-day real scenarios (little did we know) were perfectly timed with the next session we covered. We’ll continue to look back on the material and learn from it for years to come."

- Juan Carlos and Melanie

“My husband and I were confronted with the need to dig deeper into uniting and harmonizing our faith as a couple. We come from two different faith traditions, so going through this with one another challenged us to seek tangible ways to put Christ at the center of everything. We plan on keeping this book to refer back to as our marriage progresses. This course  . . .  has set a solid foundation for our marriage.”

- Alyssa

"Dr. Delaney has provided a much needed road map for sacramental marriage.  Not only is it a necessary resource for guiding engaged couples but it informs individuals considering marriage as a vocation and enriches those who have been married for many years.  Today marriages face a tide of anti-preparation for the Sacrament. The Great Mystery confronts those lies head on and gives a thorough and practical guide for marriage, grounded in sound human psychology and faithful theology."

-Shelley Davis, President TORCH San Antonio

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