References: St. Paul Center: Where Do We Find Church Teaching on the Real Presence? By Leon J. Suprenant Jr. and Philip C.L. Gray [social-share] https://stpaulcenter.com/posts/where-do-we-find-church-teaching-on-the-real-presence Catechism Part Two  In Brief: https://www.vatican.va/content/catechism/en/part_two/section_two/chapter_one/article_3/in_brief.html Catholic Answers: https://www.catholic.com/qa/do-any-other-faiths-believe-in-transubstantiation Orthodox Church in America: Holy Eucharist https://www.oca.org/orthodoxy/the-orthodox-faith/worship/the-sacraments/holy-eucharist Luther’s defense of the Real Presence in the Eucharist https://www.detroitcatholic.com/voices/luther-s-defense-of-the-real-presence-in-the-eucharist Greek Orthodox Archdiocese of America: The Holy Eucharist https://www.goarch.org/-/the-holy-eucharist SACRAMENT OF THE EUCHARIST (Coptic Orthodox) https://www.copticchurch.net/introduction-to-the-coptic-church/sacraments/4_eucharist