• A sample of modern “glossolalia“: Pentecostal Assemblies of God Pastor Kenneth E. Hagin (1917-2009) speaking in tongues – video WBS 021803 posted by John Wyatt, October 21, 2014.
• Charles A. Sullivan (Canadian linguist & historian) has done the most exhaustive research of any scholar in his “Gift of Tongues Project.” His fourfold agenda is to:
  • uncover new or forgotten ancient literature on the subject
  • provide the original source texts in digital format
  • translate the texts into English and add some commentary
  • to trace the perception of tongues in the church from inception until modern times. *** Key Source ***
• See also by Sullivan:
  • “7 Facts About Speaking in Tongues” (September 6, 2017).
  • “Gift of Tongues Quiz” (January 18, 2016), in two parts. What do you know about speaking in tongues? Take Sullivan’s quiz and see!
  • “The Renewalist Response to the Gift of Tongues Project” (March 20, 2018) – Current Pentecostal, Charismatic, and Third Wave responses to the Gift of Tongues Project.
  • “Tongues of Corinth Infographic” (May 11, 2018) – A history of speaking, interpreting, and reading from 500 B.C. to 400 A.D. in Judaism and early Christianity, which makes sense of St. Paul’s references to “tongues” in the church of Corinth.
  • “A Jewish-Greek Perspective on the Tongues of Corinth” (January 22, 2018) – a detailed analysis. *** Key Source ***
  • “Pope Benedict XIV on the Gift of Tongues,” an English translation (by Charles A. Sullivan) of his treatise, De Servorum Dei Beatificatione et Beatorum Canonizatione (ca. 1748 AD), a “carefully written and well documented work into what constitutes the gift of tongues, procedures required to investigate the phenomenon, and notable examples,” all of which are known languages (February 3, 2016).
  • “A Catholic History of Tongues: 30 to 1748 AD” (Gift of Tongues Project, November 29, 2016).
  • Charles A. Sullivan (Canadian linguist & historian), “Cessationism, Miracles, and Tongues” – in Four Parts: (1) Introduction and General Summary to this series (Gift of Tongues Project, June 8, 2017); (2) A medieval background to magic and miracle along with an overview of the Protestant view of miracles in the early church (June 10, 2017); (3) The question of miracles from Martin Luther to the church of England (June 13, 2017); (4) Cessationism from the 1800s until today (June 15, 2017).

• Jane Doe (professor at Seminary X – identity suppressed), “‘Speaking in Tongues’: A Brief Historical, Doctrinal, Scriptural and Spiritual Evaluation” (December, 2017)
• Ben Witherington III (Methodist professor of New Testament at Asbury Theological Seminary), “Biblical Views: Speaking in the Tongues of Men and Angels?” Biblical Archaeology Review, Vol. 41, No. 4 (July-August, 2015), summarized by Megan Sauter in “Speaking in Tongues in the Bible” (Bible History Daily, May 14, 2017)
• Victor Salas (midwestern seminary professor), “Francisco Suárez and His Sources on the Gift of Tongues,” New Blackfriars, (March 30, 2018), 23pp. [Points out significant points of divergence between the gift as the CCR understands and practices it and as it has traditionally been understood historically.]
• Fr. Chad Ripperger, “On Speaking in Tongues – Exorcist Father Chad Ripperger” (The Reel Deels, April 2, 2018; Copyright 2015-2018 The Swords of Saint Michael) – Video.
• “Jubilus” (Wikipedia) – Some charismatics claim that “Jubilation” (from Lat. “Jubilus“) was the word used for “tongues” throughout most of Catholic history. The only technical definition ever used for jubilus refers to the lengthy melisma at the end of the Alleluia as sung in Gregorian chant.
• Calvert Shenk, “What is the Jubilus?” (April 3, 2005) – Shortly before his death in July of 2005, Shenk, a nationally-known organist, musicologist, and specialist in Gregorian chant, polyphony, and liturgy, wrote this reflection on the nature of the “Jubilus.”
• Douglas Judisch, An Evaluation of Claims to the Charismatic Gifts (Grand Rapids, MI: Baker Book House, 1978; Fort Wayne, IN: Concordia Seminary Press, 1985) – a biblical evaluation of the claims of the charismatic movement by a Missouri-Synod Lutheran Scripture professor; see also Mark Shaver’s review of Judisch’s book here.
• “What is the spiritual gift of interpreting tongues?” (GotQuestions?org) – While mistaken about cessationism, this article is right in its claim that ‘tongues’ always referred in apostolic times to known languages.
• Yuriy Stasyuk, “10 Hard Questions about ‘Tongues’” (The Reluctant Skeptic) – Ukrainian evangelical who dropped out of the charismatic movement offers his reflections honest questions.
• John Vennari & Fr. Nicholas Gruner, “Charismatics & the Gift of Tongues” (The Fatima Center, March 16, 2015), video.*
• “Charismatic Gifts: The Gift of Tongues” (Sensus Fidelium, October 11, 2014), refers the writings of Fr. Cornelius a Lapide (1567-1637), video.
• Excerpt on Tongues in Eastern Orthodoxy from Stephen Hunt, A History of the Charismatic Movement in Britain and the United States of America: The Pentecostal Transformation of Christianity (Lewiston: The Edwin Mellen Press, 2009), p. 197.
• The Publican (Richard Salbato), The Tongues of Satan (JMJ Publishing, 1983) – the Catholic, former charismatic author, argues that Satan is using the charismatic movement, including some of its genuinely positive effects, to thwart God and mislead Christians. Kevin J. Symonds’s recollection of “Richard Salbato” sheds light on Sabato’s knowledge, credibility, and concern for truth, despite his “gruff personality” and “off-putting” style.*
• Fr. Dwight Longenecker, “What is ‘Speaking in Tongues’?” (Fr. Longenecker’s blog, November 7, 2017).
• “20th Century Tongues … Faith or Fake?” – extensive links, organized into 11 subject areas – Protestant site.
• John MacArthur (Calvinist evangelical pastor & theologian), “Speaking in Tongues” (Charismatic Chaos series, 1991; published 2012) – video.
• John MacArthur (Calvinist evangelical pastor & theologian), “Is Speaking in Tongues Demonic? 1/3” (October 28, 2010) – Video.*
• John MacArthur (Calvinist evangelical pastor & theologian), “Is Speaking in Tongues Demonic? 2/3” (October 30, 2010)- Video.*
• John MacArthur (Calvinist evangelical pastor & theologian), “Is Speaking in Tongues Demonic? 3/3” (November 3, 2010) – Video.*

* Reader discretion advised: The linked articles above have been selected because of positive insights they contain. Some of them, however, contain various material that certain viewers may find offensive. Some are by traditional Catholics whose perspective on certain issues may offend other Catholics. Others are by Protestants whose erroneous characterizations of Catholic practices may offend many Catholics, and whose ‘Cessationist’ belief that miraculous gifts ceased after the apostolic age will be found objectionable by most Catholics. The inclusion of perspectives of these authors on the charismatic movement should not be construed as support for all their views on other matters. Still other books are by non-academic authors whose focus on personal experiences and speculations may be off-putting to certain readers, just as others are by academic writers whose detached, clinical approaches may be off-putting to other readers. Yet all contain insights worthy of thoughtful consideration. Please consider with due discretion.