Registration is now closed for the Summer 2016 Conference

The Virgin Mary’s Role in the Defeat of Satan 

Summer Conference 2016

August 7 (Sunday evening) to August 12 (Friday Noon)

Daily Conferences, Liturgy, Adoration, Prayer (Liturgy of the Hours), Candlelight Procession and more!


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Featured Speakers include:

Robert J. Spitzer, S.J., Ph.D.
Former President of Gonzaga University and Founder of the Magis Institute


Bishop Thomas Paprocki
Bishop of Springfield


Msgr. John Esseff
President of the Board of Pope Leo XIII Institute and Exorcist for Diocese of Scranton


Msgr. Charles M. Mangan
Mariologist, director of the Office of the Marian Apostolate in the Diocese of Sioux Falls


Fr. Gary Thomas
Exorcist for the Diocese of San Jose and the subject of the book and film “The Rite”


Msgr. Stephen Rossetti, D. Min., Ph.D.
Licensed Psychologist, and Professor of Pastoral Studies, best-selling author


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Read more about the Pope Leo XIII Institute!


Ministry of Healing, Exorcism, and Deliverance
in the Roman Catholic Tradition!

For the Glory of the Most High God and the Salvation of Souls,

we dedicate and entrust our endeavors to Mother Mary,

who has crushed the head of our enemy,

and we beseech the aid and protection of St. Michael the Archangel.


The Pope Leo XIII Institute – Join Us Today.



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Why Your Priests Need the Pope Leo XIII Institute

Contemplative Prayer and Spiritual Discernment

Everything the Institute does occurs within the context of contemplative prayer. The spiritual development and prayer life of each priest is the bedrock to this ministry. The Holy Spirit confers the gifts of spiritual discernment necessary to ascertain the presence of evil, and Jesus Christ is the true exorcist who works through the actions of His priests. Thus, at the center of each day is our celebration of the Eucharist and the Liturgy of the Hours.

Improving Fundamental Font of Knowledge

In accordance with psychiatric medicine and formal church teaching, the Institute provides clergy with a font of rudimentary background information and basic knowledge concerning fundamental spiritual manifestations, the myriad types and functions of spirits, and the dynamics of multiple destructive manifestations of evil. The Institute also serves as a forum for ongoing collaboration and support among the exorcists themselves.

Curriculum Development

Relying upon experienced exorcists and theologians, as well as experts in the field of medicine, and psychiatry, law, and education, the Institute formulated a broad curriculum of intensive, in-depth educational programming. With practicums, case studies, and an interactive adult teaching methodology, the Institute coaches the bishop, priest and deacon participants as they strategize their approach in the face of challenging circumstances.

Advancing Professional Approaches, Best Practices, and a Framework for Understanding

Clergy master a basic general theoretical framework of understanding and learn professional approaches and best practices related to confronting demonic forces in varied circumstances.

Monitoring and Consultation

Mentoring and consultation services exist to support clergy and laity in ensuring fidelity with standards of health care and church teaching. We support local diocesan teams in developing effective ministerial strategies and prayerful approaches to engage in all forms of spiritual warfare.

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“ I would recommend the Institute for others in this ministry. It has made me realize how much more there is to learn in relation to the healing ministry. The friendship and network of exorcists is quite important. Learning from experienced priests is most important, and also, the time to reflect on this ministry is key to building up our diocesan outreach.”
— Priest Participant
Pope Leo XIII Institute

The Latest Communique



“The Virgin Mary’s Role in the Defeat of Satan”- Please register asap. Seating is limited and will sell out soon.
August 7-12, 2016 – Read more….

A call to be an “Ambassador of Mercy” – a homily from Father Jim Mattaliano, SJ

February 17, 2016 Fr.Jim Mattaliano’s homily is based on the Gospel reading of the day: Gospel LK 11:29-32 While still more people gathered in the crowd, Jesus said to them, “This generation is an evil generation; it seeks a sign, but no sign will be given it, except the sign of Jonah. Just as Jonah became […]

Mission and Program Bulletin

Please take a few moments to look through our Mission and Program Bulletin below. We hope you enjoy seeing what we have to offer!