President of United in Christ (UIC) with Headquarters in Dallas, Tx (USA), an organization dedicated to relations between Christians of various confessions. Initiator of the Ecumenical Meeting "Kairòs", which is celebrated annually in Italy and the United States of America (kairos2017.com). Since 2002, he has organized Bari International Conferences for the Dialogue between Catholics and Messianic Jews. Vice President of the International Catholic Charismatic Renewal (ICCRS) a Pontifical Association of Christ’s Faithful with a seat in the Vatican City. President Emeritus of the Catholic Fraternity of Charismatic Covenant Communities and Fellowships (CFCCCF) a Pontifical Association of Christ’s Faithful with a seat in the Vatican City (2002-2013). Former Member of the Pontifical Council for the Laity of the Holy See (2008-2013). On several occasions he met Pope John Paul II, Pope Benedict XVI and Pope Francis. Matteo Calisi is co-president with Pastor Giovanni Traettino, of the Italian Charismatic Consultation (CCI), a body of dialogue between Catholic Catholics and Pentecostal Evangelicals in Italy. He is a member of several international organizations of ecumenical dialogue with Protestant, Orthodox, Pentecostal churches and messianic Jews. As 'minister of reconciliation' he has held conferences in several churches and Christian communities in about eighty countries around the world. As a ‘reconciliation ministry’ he has held conferences in several Christian churches and communities in 80 countries around the world. He has been invited to speak at numerous academic institutions, seminars and Catholic and Protestant.