Dr. Scott Hahn, an internationally known speaker and author, gave a talk titled "Lord Have Mercy." He is a professor of theology and scripture at Franciscan University of Steubenville, in Ohio, and is the founder and director of the Saint Paul Center for Biblical Theology. In 2005, he was appointed as the Pope Benedict XVI Chair of Biblical Theology and Liturgical Proclamation at St. Vincent Seminary in Latrobe, Pa. Dr. Hahn is also the bestselling author of numerous books, including The Lamb's Supper.

Father Donald Calloway, MIC, spoke on the topic "Mary: Mother and Masterpiece of Mercy." A convert to Catholicism, Fr. Donald is a member of the Congregation of Marians of the Immaculate Conception. Before his conversion to Catholicism, he was a high school dropout who had been kicked out of a foreign country, institutionalized twice, and thrown in jail multiple times. After his radical conversion he earned a B.A. in philosophy and theology from the Franciscan University of Steubenville, Ohio, H, M.Div. and S.T.B. degrees from the Dominican House of Studies in Washington, D.C., and an S.T.L. in Mariology from the International Marian Research Institute in Dayton, Ohio. He is the editor of two books: The Immaculate Conception in the Life of the Church (Marian Press, 2004) and The Virgin Mary and Theology of the Body (Marian Press, 2005). He is the author of the book Purest of All Lilies: The Virgin Mary in the Spirituality of St. Faustina (Marian Press, 2008). His new book, No Turning Back: A Witness to Mercy, will be released in January. Father Donald is the house superior of the Marian House of Studies in Steubenville.

Theresa Bonopartis has been involved in post-abortion work and counseling for 20 years. She addressed the Congress on the topic "Where Mercy Meets Faithfulness," touching on how God not only healed her from an abortion but radically changed her life. From Westchester County, New York, Theresa is director of Lumina, a post-abortion referral service that operates under the auspices of Good Counsel Homes founded by Christopher Bell and Fr. Benedict Groeschel, CFR.

Most Reverend Robert W. Finn, DD, Bishop of Kansas City-St. Joseph (Missouri), serves as chairman of the U.S. Bishops' Task Force on the Life and Dignity of the Human Person and as consultant to both the Pro-Life Secretariat and the Bishops' Committee on Domestic Justice and Human Development. As a priest in St. Louis, he was involved in planning the first archdiocesan celebrations of Divine Mercy. In his own diocese he has encouraged the Divine Mercy devotion. Shortly after becoming ordinary, he established the Diocesan Shrine to the Divine Mercy and St. Faustina.

Father Seraphim Michalenko, MIC, served as homilist for the 10 a.m. Mass on Sunday. Father Seraphim is a world-renowned expert in the message of The Divine Mercy. He served as vice-postulator for the canonization cause of St. Faustina Kowalska, whose revelations in the 1930s led to the modern Divine Mercy movement. He serves as director of the Association of Marian Helpers in Stockbridge, Mass. He is a familiar face to EWTN viewers from his appearances on instructive and inspirational programs dealing with The Divine Mercy message and devotion. He was directly instrumental in the publication of the very first edition in the original Polish language of St. Faustina's now world-famous Diary, as well as involved in the preparation of the same in several other versions. He also was a firsthand witness of the miracle attributed to St. Faustina's intercession that opened the way for her being declared "Blessed" in 1993, and he coordinated the efforts that served to verify that miracle as well as a second one that led her to be declared a "saint" in 2000.

Most Rev. William Lori, STD, is the Bishop of Bridgeport, Conn., and the Episcopal advisor to the North American Congress on Mercy. Bishop Lori was the principal celebrant of Holy Mass on Saturday evening. Bishop Lori is chairman of the Board of Trustees of Sacred Heart University in Fairfield, Conn., and past chairman of The Catholic University of America, in Washinton, D.C. In 2005, Bishop Lori was appointed supreme chaplain of the Knights of Columbus. Bishop Lori serves as chairman of the U.S. Conference of Catholic Bishops' Committee on Doctrine, and is a member of the USCCB Committee on Pro-Life Activities and the ad-hoc Committee for the Defense of Marriage.

Susan Wills is assistant director for Education and Outreach in the U.S. Conference of Catholic Bishops' Secretariat of Pro-Life Activities. An attorney, she holds a J.D. from the University of Miami School of Law and an L.L.M. degree in International and Comparative Law from Georgetown University Law Center in Washington, D.C. Since joining the USCCB in July 1993, she has overseen the preparation of the annual Respect Life Program materials. Susan has written articles for Catholic periodicals, secular outlets, and law journals and writes the bishops' pro-life newsletter, Life Insight. She also produces the monthly "Word of Life" series, a liturgical resource for pastors. She is a frequent speaker at diocesan conferences and has been a guest on Catholic, Christian, and secular television and radio programs.